It is
proposed that this filing become effective on April 22, 2013 pursuant to paragraph (b) of rule 485.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940,
as amended, the Registrant certifies that it meets all of the requirements for effectiveness of this Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933, and the Registrant has duly caused this Post-Effective Amendment
No. 74 to its Registration Statement to be signed on its behalf by the undersigned, thereto duly authorized, in the City of Springfield and the Commonwealth of Massachusetts as of the 22nd day of April, 2013.

MASSMUTUAL SELECT FUNDS

By:

/s/ ERIC
WIETSMA

Eric WietsmaPresident

Pursuant to the requirements of the Securities Act of 1933, as amended,
this Post-Effective Amendment No. 74 to the Registration Statement has been signed by the following persons in the capacities as indicated as of the 22nd day of April, 2013.

Signature

Title

/s/ ERIC
WIETSMA

Eric Wietsma

President and Chief Executive Officer

/s/ NICHOLAS H.
PALMERINO

Nicholas H. Palmerino

Chief Financial Officer and Treasurer

*

Richard H. Ayers

Chairman and Trustee

*

Allan W. Blair

Trustee

*

Nabil N. El-Hage

Trustee

*

Maria D. Furman

Trustee

*

R. Alan Hunter, Jr.

Trustee

*

Robert E. Joyal

Trustee

*

F. William Marshall, Jr.

Trustee

*

C. Ann Merrifield

Trustee

*

Elaine A. Sarsynski

Trustee

*

Susan B. Sweeney

Trustee

*By:

/s/ ANDREW M.
GOLDBERG

Andrew M. Goldberg

Attorney-in-Fact

INDEX TO EXHIBITS

Exhibit No.

Title of Exhibit

EX-101.INS

XBRL Instance Document

EX-101.SCH

XBRL Taxonomy Extension Schema Document

EX-101.CAL

XBRL Taxonomy Extension Calculation Linkbase

EX-101.DEF

XBRL Taxonomy Extension Definition Linkbase

EX-101.LAB

XBRL Taxonomy Extension Labels Linkbase

EX-101.PRE

XBRL Taxonomy Extension Presentation Linkbase

EX-101.INS
2
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For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.000000.057500000000.010000.047500.00550.00550.00550.00550.00550000.00250.00569218379847752334069069028148810845858171068178424645278217131464527821713This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.<b>FEES AND EXPENSES OF THE FUND </b>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 501% of the average value of its portfolio.Under normal circumstances, the Fund invests at least 65% of its total assets in a diversified portfolio of fixed income securities of varying maturities. (For purposes of this 65% requirement, the Fund may include among its investments exposures created under derivatives transactions.) Fixed income securities include the following bonds, debt securities, and other similar instruments issued by various U.S. and non-U.S. public- or private-sector entities: securities issued or guaranteed by the U.S. government, its agencies, or government-sponsored enterprises; corporate debt securities, including convertible securities and corporate commercial paper; mortgage-backed and other asset-backed securities; inflation-indexed bonds issued both by governments and corporations; structured notes, including structured products and event-linked bonds; bank capital and trust preferred securities; loan participations and assignments; delayed funding loans and revolving credit facilities; bank certificates of deposit, fixed time deposits, and bankers' acceptances; repurchase agreements on fixed income securities and reverse repurchase agreements on fixed income securities; debt securities issued by states or local governments and their agencies, authorities, and other government-sponsored enterprises; obligations of non-U.S. governments or their subdivisions, agencies, and government-sponsored enterprises; and obligations of international agencies or supranational entities. The Fund may invest up to 30% of its total assets in non-U.S. dollar-denominated securities of these entities, and may invest without limit in U.S. dollar-denominated securities of foreign issuers. The Fund will normally limit its foreign currency exposure (from non-U.S. dollar- denominated securities or currencies) to 20% of its total assets. The Fund may also invest up to 15% of its total assets in emerging markets.<br/><br/>The Fund may but will not necessarily engage in foreign currency transactions, including forward contracts, options on currency, futures contracts, and swap contracts, to take long or short positions in foreign currencies in order to enhance the Fund's investment return or to attempt to protect against adverse changes in currency exchange rates. In pursuing its investment objective, the Fund may (but is not obligated to) use a wide variety of additional exchange-traded and over-the-counter derivatives, including futures contracts (for hedging purposes, to adjust various portfolio characteristics, including the duration (interest rate volatility) of the Fund's portfolio, or as a substitute for direct investments); interest rate swaps (for hedging purposes, to adjust various portfolio characteristics, including the duration (interest rate volatility) of the Fund's portfolio, or as a substitute for direct investments); and credit default swaps (for hedging purposes, to adjust various portfolio characteristics, including the duration (interest rate volatility) of the Fund's portfolio, or as a substitute for direct investments). The Fund may also purchase and sell exchange-traded and over-the-counter options for hedging purposes. Use of derivatives by the Fund may create investment leverage. The Fund may invest up to 10% of its total assets in preferred stocks and convertible securities. The Fund may also invest in money market securities, including commercial paper. The Fund may hold a portion of its assets in cash or cash equivalents. The Fund may sell securities short for hedging or investment purposes.<br/><br/>The Fund invests primarily in investment grade securities (rated Baa or higher by Moody's, BBB or higher by Standard &amp; Poor's or Fitch, or, if unrated, determined by the subadviser to be of comparable quality), but may invest up to 10% of its total assets in below investment grade securities ("junk" or "high yield" bonds), including securities in default. In the event that a security is downgraded after its purchase by the Fund, the Fund may continue to hold the security if the Fund's subadviser, Pacific Investment Management Company LLC ("PIMCO"), considers that doing so would be consistent with the Fund's investment objective.<br/><br/>The Fund may invest in domestic and foreign issuer loans, which are business loans that generally are arranged through private negotiations between a borrower and several financial institutions, and loan participations that pay interest at rates that float or reset periodically at a margin above a generally recognized base lending rate. Certain fixed income securities in which the Fund may invest pay interest at variable or floating rates. Variable rate securities tend to reset at specified intervals, while floating rate securities may reset upon a change in a specified index rate. In most cases, these reset provisions reduce the impact of changes in market interest rates on the value of the security. However, some securities do not track the underlying index directly, but reset based on formulas that may produce a leveraging effect; others may also provide for interest payments that vary inversely with market rates. The market prices of these securities may fluctuate significantly when interest rates change. The Fund may invest in loans of companies whose financial condition is troubled or uncertain and that may be involved in bankruptcy proceedings, reorganizations, or financial restructurings.<br/><br/>The Fund's average portfolio duration is normally expected to be within two years (plus or minus) of the duration of the Barclays U.S. Aggregate Bond Index, as calculated by PIMCO, which as of January 31, 2013 was 4.77 years. Duration measures the price sensitivity of a bond to changes in interest rates. Duration is the dollar weighted average time to maturity of a bond utilizing the present value of all future cash flows.<br/><br/>PIMCO employs an investment approach that attempts to identify areas of the bond market that are undervalued relative to the rest of the market. PIMCO identifies these areas by grouping bonds into sectors such as: money markets, governments, corporates, mortgages, asset-backed, and international. Sophisticated proprietary software then assists in evaluating sectors and pricing specific securities. Once investment opportunities are identified, PIMCO will shift assets among sectors depending upon changes in relative valuations and credit spreads. In selecting securities for the Fund, PIMCO develops an outlook for interest rates, currency exchange rates, and the economy; analyzes credit and call risks, and uses other security selection techniques. The proportion of the Fund's assets committed to investment in securities with particular characteristics (such as quality, sector, interest rate, or maturity) varies based on PIMCO's outlook for the U.S. economy and the economies of other countries in the world, the financial markets, and other factors. The "total return" sought by the Fund consists of income earned on the Fund's investments, plus capital appreciation, if any, which generally arises from decreases in interest rates, foreign currency appreciation, or improving credit fundamentals for a particular sector or security.<br/><br/>The Fund expects that it will engage in active and frequent trading and so will typically have a relatively high portfolio turnover rate.<b>Shareholder Fees</b> (fees paid directly from your investment)<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:<b>INVESTMENTS, RISKS, AND PERFORMANCE <br/><br/>Principal Investment Strategies </b><b>Performance Information </b>The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund&#8217;s performance from year to year for Class Z shares. The table shows how the Fund&#8217;s average annual returns for 1 year, and since inception, compare with those of a broad measure of market performance. Performance for Class A and Class N shares of the Fund reflects any applicable sales charge. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More up-to-date performance information is available at http://www.massmutual.com/funds or by calling 1-888-309-3539.<b>Annual Performance <br/><br/>Class Z Shares </b><b>Average Annual Total Returns </b><br/>(for the periods ended December 31, 2012)00000.01<b><a name="pro458123_4"></a>MassMutual Select Diversified Value Fund </b><b>INVESTMENT OBJECTIVE </b>This Fund seeks to achieve long-term growth of capital and income by investing primarily in a diversified portfolio of equity securities of larger, well-established companies.<b>FEES AND EXPENSES OF THE FUND </b>This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.<b><a name="pro458123_5"></a>MassMutual Select Fundamental Value Fund </b><b>Example </b>This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:Except for Class N shares, the figures shown above would be the same whether you sold your shares at the end of a period or kept them. For Class N shares, you would pay the following expenses if you did not redeem your shares:<b>Portfolio Turnover </b>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 38% of the average value of its portfolio.<b>Principal Risks </b><b>Performance Information </b>The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1 and 5 years, and since inception, compare with those of a broad measure of market performance. Performance for Class A and Class N shares of the Fund reflects any applicable sales charge. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More up-to-date performance information is available at http://www.massmutual.com/funds or by calling 1-888-309-3539.After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor&#8217;s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class S only. After-tax returns for other classes will vary.<b><a name="pro458123_3"></a>MassMutual Select BlackRock Global Allocation Fund </b>0.00130.00180.00330.00330.0038<b>INVESTMENT OBJECTIVE </b>The Fund seeks long-term total return.0.00680.00730.00880.01130.0143<b>FEES AND EXPENSES OF THE FUND </b>This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.<b>INVESTMENT OBJECTIVE </b><b><a name="pro458123_12"></a>MassMutual Select Growth Opportunities Fund </b><b>INVESTMENT OBJECTIVE </b>This Fund seeks long-term capital appreciation.The Fund seeks long-term total return.<b>FEES AND EXPENSES OF THE FUND </b>This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.<b>FEES AND EXPENSES OF THE FUND </b><b>Example </b>This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:<b>MassMutual Select Focused Value Fund </b>This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.<b>INVESTMENT OBJECTIVE </b>This Fund seeks growth of capital over the long-term.<b>MassMutual Select Small Cap Value Equity Fund </b><b>FEES AND EXPENSES OF THE FUND </b><b>INVESTMENT OBJECTIVE </b>This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.<b>MassMutual Select Small Company Growth Fund </b>This Fund seeks to maximize total return through investment primarily in small capitalization equity securities.<b>FEES AND EXPENSES OF THE FUND </b>This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.<b>Shareholder Fees</b> (fees paid directly from your investment)<b>Shareholder Fees</b> (fees paid directly from your investment)<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)<b>Shareholder Fees</b> (fees paid directly from your investment)<b>INVESTMENTS, RISKS, AND PERFORMANCE <br/><br/>Principal Investment Strategies </b><b>INVESTMENT OBJECTIVE </b><b>Example </b>The Fund seeks long-term capital appreciation.This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:<b>FEES AND EXPENSES OF THE FUND </b><b>Annual Performance <br/><br/>Class S Shares </b><b>Average Annual Total Returns </b><br/>(for the periods ended December 31, 2012)<b>INVESTMENT OBJECTIVE </b>0000.05750000Except for Class N shares, the figures shown above would be the same whether you sold your shares at the end of a period or kept them. For Class N shares, you would pay the following expenses if you did not redeem your shares:This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.00000.05750<b>Portfolio Turnover </b>The Fund seeks to achieve as high a total rate of return on an annual basis as is considered consistent with prudent investment risk and the preservation of capital.<b>Shareholder Fees</b> (fees paid directly from your investment)<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)<b>INVESTMENT OBJECTIVE </b><b>FEES AND EXPENSES OF THE FUND </b><b>Shareholder Fees</b> (fees paid directly from your investment)<b>Example </b>This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 107 of the Fund&#8217;s Prospectus or from your financial professional.Except for Class N shares, the figures shown above would be the same whether you sold your shares at the end of a period or kept them. For Class N shares, you would pay the following expenses if you did not redeem your shares:This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:<b>INVESTMENT OBJECTIVE </b>This Fund seeks growth of capital over the long-term.<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)<b>FEES AND EXPENSES OF THE FUND </b><b>Shareholder Fees</b> (fees paid directly from your investment)This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.<b>Portfolio Turnover </b><b>Example </b><b>Portfolio Turnover </b>This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:<b>Principal Risks </b>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 19% of the average value of its portfolio.0.0080.0080.0080.008The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 105% of the average value of its portfolio.<b>Portfolio Turnover </b>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 32% of the average value of its portfolio.<b>INVESTMENTS, RISKS, AND PERFORMANCE<br/><br/>Principal Investment Strategies</b><b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)0000.0025<b>Portfolio Turnover </b><b>INVESTMENTS, RISKS, AND PERFORMANCE <br/><br/><b>Principal Investment Strategies </b>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 39% of the average value of its portfolio.The Fund invests primarily in equity securities of smaller companies that the Fund&#8217;s subadvisers believe offer potential for long-term growth. Under normal circumstances, the Fund invests at least 80% of its net assets in the securities of companies whose market capitalizations at the time of purchase are within the market capitalization range of companies included in the Russell 2000<sup style="VERTICAL-ALIGN: top">&#174;</sup> Index or the S&amp;P SmallCap 600 Index (as of January 31, 2013, between $33 million and $5.26 billion). Equity securities may include common stocks, rights, and warrants. While most assets typically will be invested in common stocks of U.S. companies, the Fund also may invest up to 20% of its total assets in foreign securities and American Depositary Receipts (&#8220;ADRs&#8221;), including emerging market securities. The Fund may use futures contracts (including equity index futures contracts based primarily on the Russell 2000 Index) as a substitute for direct investments. Use of derivatives by the Fund may create investment leverage. The Fund may hold a portion of its assets in cash or cash equivalents. <br/><br/>The Fund is managed by two subadvisers, The Boston Company Asset Management, LLC (&#8220;The Boston Company&#8221;) and Eagle Asset Management, Inc. (&#8220;Eagle&#8221;), each being responsible for a portion of the portfolio, but not necessarily equally weighted. Each subadviser employs a growth-based investment approach and may perform a number of analyses in considering whether to buy or sell a security for the Fund. Each subadviser relies on fundamental research to identify small-cap companies that it believes are experiencing or will experience rapid earnings or revenue growth. A subadviser may consider selling a stock when, in its judgment, the security reaches what is believed to be an unsustainable valuation, a company&#8217;s fundamentals deteriorate, the original investment thesis proved incorrect, or the industry dynamics have negatively changed.<br/><br/>The Fund expects that it will engage in active and frequent trading and so will typically have a relatively high portfolio turnover rate.0.0020.0030.00450.0045<b>INVESTMENTS, RISKS, AND PERFORMANCE </b><br/><br/><b>Principal Investment Strategies </b>This Fund seeks to achieve its objective by investing primarily in equity securities of U.S. companies. Under normal market conditions, the Fund invests at least 80% of its net assets in equity securities. Equity securities may include common stocks, preferred stocks, securities convertible into common or preferred stock, rights, and warrants. The Fund typically invests most of its assets in equity securities of U.S. companies, but may invest up to 20% of its total assets in foreign securities and American Depositary Receipts ("ADRs"), including emerging market securities. The Fund may hold a portion of its assets in cash or cash equivalents. The Fund is non-diversified, which means that it may hold larger positions in a smaller number of stocks than a diversified Fund.<br/><br/> The Fund is managed by two subadvisers, Sands Capital Management, LLC ("Sands Capital") and Delaware Management Company ("DMC"), each being responsible for a portion of the portfolio, but not necessarily equally weighted. Sands Capital seeks long-term capital appreciation by investing in stocks believed to have potential for dramatic wealth creation using bottom-up, fundamental research and focusing on six key investment criteria: sustainable, above average earnings growth, a leadership position in a promising business space, significant competitive advantages/unique business franchise, a clear mission and value-added focus, financial strength, and rational valuation relative to the market and business prospects. Sands Capital does not typically invest in companies with market capitalizations less than $1 billion. DMC seeks to select securities that it believes are undervalued in relation to their intrinsic value, as indicated by multiple factors, including the return on capital above its cost of capital. DMC will normally invest in common stocks of companies with market capitalizations of at least $3 billion at the time of purchase. Each subadviser may consider selling a security for the Fund, if, for example, in its judgment, the prospects for future growth do not look promising, a more attractive opportunity is identified, if fundamentals unexpectedly change or if valuations are stretched past fair value.0.39<b>Principal Risks </b><b>Principal Risks </b><b>Principal Risks </b><b>FEES AND EXPENSES OF THE FUND </b>This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds.0.00170.00270.00420.0042250000.010.0110.01250.015-0.0014-0.0014-0.0014-0.0014<b>Example </b>This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:0.00860.00960.01110.0136<b>INVESTMENT OBJECTIVE </b>Because Total Annual Fund Operating Expenses include Acquired Fund fees and expenses, they may not correspond to the ratios of expenses to average daily net assets shown in the &#8220;Financial Highlights&#8221; tables in the Prospectus, which reflect the operating expenses of the Fund and do not include Acquired Fund fees and expenses.This Fund seeks growth of capital over the long-term.<b>FEES AND EXPENSES OF THE FUND </b>Except for Class N shares, the figures shown above would be the same whether you sold your shares at the end of a period or kept them. For Class N shares, you would pay the following expenses if you did not redeem your shares:This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.<b>Portfolio Turnover </b><b>Example </b>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 36% of the average value of its portfolio.<b>Performance Information </b>The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years (or 1 year and since inception for Class Z shares) compare with those of a broad measure of market performance. Performance for Class A and Class N shares of the Fund reflects any applicable sales charge. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More up-to-date performance information is available at http://www.massmutual.com/funds or by calling 1-888-309-3539.This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money.<br/><br/> <b>Cash Position Risk </b>The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br/><br/> <b>Convertible Securities Risk </b>Convertible securities are subject to the risks of both debt securities and equity securities. The values of convertible securities tend to decline as interest rates rise and, due to the conversion feature, tend to vary with fluctuations in the market value of the underlying common or preferred stock.<br/><br/> <b>Foreign Investment Risk; Emerging Markets Risk; Currency Risk </b>Foreign securities, including ADRs, are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of the Fund's shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social instability, greater custody and operational risks, and greater volatility in currency exchange rates.<br/><br/> <b>Growth Company Risk </b>The prices of growth securities are often more sensitive to market fluctuations because of their heavy dependence on future earnings expectations, and can be more volatile than the market in general.<br/><br/> <b>Liquidity Risk </b>Certain securities may be difficult (or impossible) to sell or positions difficult to close out at a desirable time and price, and the Fund may be required to hold an investment that is declining in value or be prevented from realizing capital gains.<br/><br/> <b>Management Risk </b>The Fund relies on the manager's ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br/><br/> <b>Non-Diversification Risk </b>Because the Fund may invest its assets in a more limited number of issuers than a diversified fund, a decline in the market value of a particular security may affect the Fund's value more than if the Fund were diversified.<br/><br/> <b>Market Risk </b>The value of the Fund's portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br/><br/> <b>Preferred Stock Risk </b>Preferred stocks are subject to the risks associated with other types of equity securities, as well as additional risks, such as potentially greater volatility and risks related to deferral, non-cumulative dividends, subordination, liquidity, limited voting rights, and special redemption rights.<br/><br/> <b>Smaller and Mid-Cap Company Risk </b>Market risk and liquidity risk are particularly pronounced for securities of smaller companies, which may trade less frequently and in smaller volumes than more widely-held securities, and may fluctuate in price more than other securities. Smaller companies may have limited product lines, markets, or financial resources and may be dependent on a limited management group; they may have been recently organized and have little or no track record of success.<br/><br/> <b>Valuation Risk </b>The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.<b>Performance Information </b>The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years (or 1 year and since inception for Class Z shares) compare with those of a broad measure of market performance. Performance for Class A and Class N shares of the Fund reflects any applicable sales charge. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More up-to-date performance information is available at http://www.massmutual.com/funds or by calling 1-888-309-3539.<b>INVESTMENTS, RISKS, AND PERFORMANCE </b><br/><br/><b>Principal Investment Strategies </b><b>Shareholder Fees</b> (fees paid directly from your investment)<b>Example </b><b>Principal Risks </b>After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor&#8217;s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class S only. After-tax returns for other classes will vary.<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:<b>Portfolio Turnover </b><b>Principal Risks </b>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. For the period July 26, 2012 (commencement of operations) through December 31, 2012, the Fund&#8217;s portfolio turnover rate was 10% of the average value of its portfolio.<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)<b>Example </b><b>Annual Performance<br/><br/>Class S Shares</b><b>Performance Information </b>The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money.<br/><br/><b>Cash Position Risk</b> The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br/><br/><b>Credit Risk</b> The Fund is subject to the risk that the issuer of an investment held by the Fund or the counterparty to a transaction entered into by the Fund will be unable or unwilling to honor its obligations.<br/><br/><b>Derivatives Risk</b> Derivatives involve risks different from, and potentially greater than, direct investments, including risks of imperfect correlation between the value of derivatives and underlying assets, counterparty default, potential losses that partially or completely offset gains, and illiquidity. Derivatives can create investment leverage and be highly volatile. Derivatives may result in losses greater than the amount invested. If the value of a derivative does not correlate well with the particular market or asset class the derivative is designed to provide exposure to, the derivative may not have the effect anticipated. Many derivatives are traded in the over-the-counter market and not on exchanges.<br/><br/><b>Foreign Investment Risk; Emerging Markets Risk; Currency Risk</b> Foreign securities, including ADRs, are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of the Fund&#8217;s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social instability, greater custody and operational risks, and greater volatility in currency exchange rates.<br/><br/><b>Frequent Trading/Portfolio Turnover Risk</b> Portfolio turnover generally involves some expense to the Fund and may result in the realization of taxable capital gains (including short-term gains). The trading costs and tax effects associated with portfolio turnover may adversely affect the Fund&#8217;s performance.<br/><br/><b>Growth Company Risk</b> The prices of growth securities are often more sensitive to market fluctuations because of their heavy dependence on future earnings expectations, and can be more volatile than the market in general.<br/><br/><b>Liquidity Risk</b> Certain securities may be difficult (or impossible) to sell or positions difficult to close out at a desirable time and price, and the Fund may be required to hold an investment that is declining in value or be prevented from realizing capital gains.<br/><br/><b>Management Risk</b> The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br/><br/><b>Market Risk</b> The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br/><br/><b>Smaller and Mid-Cap Company Risk</b> Market risk and liquidity risk are particularly pronounced for securities of smaller companies, which may trade less frequently and in smaller volumes than more widely-held securities, and may fluctuate in price more than other securities. Smaller companies may have limited product lines, markets, or financial resources and may be dependent on a limited management group; they may have been recently organized and have little or no track record of success.<br/><br/><b>Valuation Risk</b> The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.<br /><br /><b>Value Company Risk</b> The value investment approach entails the risk that the market will not recognize a security&#8217;s intrinsic value for a long time, or that a stock judged to be undervalued may actually be appropriately priced.The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years (or 1 year and since inception for Class Z shares) compare with those of a broad measure of market performance. Performance for Class A and Class N shares of the Fund reflects any applicable sales charge. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More up-to-date performance information is available at http://www.massmutual.com/funds or by calling 1-888-309-3539.This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:<b>Performance Information </b>The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance. Performance for Class A and Class N shares of the Fund reflects any applicable sales charge. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More up-to-date performance information is available at http://www.massmutual.com/funds or by calling 1-888-309-3539.<b>Portfolio Turnover </b>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 58% of the average value of its portfolio.The Fund invests primarily in common stocks of small-capitalization companies that the subadvisers believe are undervalued. Under normal circumstances, the Fund invests at least 80% of its net assets in equity securities of companies whose market capitalizations at the time of purchase are within the market capitalization range of companies included in the Russell 2000<sup>&#174;</sup> Index or the S&amp;P SmallCap 600 Index (as of January 31, 2013, between $33 million and $5.26 billion). Equity securities may include common stocks, preferred stock, rights, and warrants. The Fund typically invests most of its assets in U.S. companies, but may invest up to 20% of its total assets in foreign securities, including emerging market securities. The Fund may hold a portion of its assets in cash or cash equivalents. <br /><br /> The Fund is managed by two subadvisers, Wellington Management Company, LLP (&#8220;Wellington Management&#8221;) and Barrow, Hanley, Mewhinney &amp; Strauss, LLC. (&#8220;Barrow Hanley&#8221;), each being responsible for a portion of the portfolio, but not necessarily equally weighted. Each subadviser employs a value-based investment approach and may perform a number of analyses in considering whether to buy or sell a security for the Fund. In selecting investments for the Fund, Wellington Management generally employs a bottom-up stock selection process that utilizes proprietary, fundamental research to identify companies it considers to be undervalued and to have the potential for significant longer-term returns. In selecting securities for the Fund, Barrow Hanley typically seeks to exploit market inefficiencies by using proprietary research to identify small capitalization companies that it considers to be undervalued and to have the potential to generate superior returns while subjecting the Fund to below average levels of risk. A subadviser may consider selling a stock for the Fund if, in its judgment, the security has reached its target price, has failed to perform as expected, or other opportunities appear more attractive.0.190.00690.00690.00690.00690.00690.0069March 31, 2014<b>INVESTMENTS, RISKS, AND PERFORMANCE </b><br/><br/><b>Principal Investment Strategies </b>00000.05750<table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"><tr><td valign="bottom">Highest<br/>Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2Q&nbsp;&nbsp;'03,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">17.18%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">Lowest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">4Q&nbsp;&nbsp;'08,</td> <td valign="bottom" nowrap="nowrap" align="right">&nbsp;&nbsp;</td> <td valign="bottom" align="right">&nbsp;</td> <td valign="bottom" nowrap="nowrap" align="right">&nbsp;</td> <td valign="bottom" nowrap="nowrap" align="right">-19.40%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table><b>Principal Risks </b>For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds.25000<b>Principal Risks </b><b>Shareholder Fees</b> (fees paid directly from your investment)0.07860.06630.05110.07790.07570.02170.060.042100000.00250.005<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 22% of the average value of its portfolio.You have the potential to make money by investing in the Fund, but you can also lose money.<b>INVESTMENTS, RISKS, AND PERFORMANCE<br/><br/>Principal Investment Strategies </b>000000.01The Fund invests primarily in equity securities of issuers that the Fund's subadviser, Wellington Management Company, LLP ("Wellington Management"), believes are undervalued. Under normal circumstances, the Fund invests at least 80% of its net assets in equity securities. Equity securities include common stock, preferred stock, securities convertible into common or preferred stock, rights, and warrants. Although the Fund may invest in companies of any size, the Fund will tend to focus on companies with large market capitalizations (which Wellington Management believes are generally above $2 billion). The Fund may invest up to 20% of its total assets in the securities of foreign issuers and American Depositary Receipts ("ADRs"), including emerging market securities. The Fund may hold a portion of its assets in cash or cash equivalents.<br/><br/>Wellington Management generally employs a bottom-up investment approach based on fundamental analysis of companies with large market capitalizations and estimated below-average projected price-to-earnings ratio. Based on its assessment of various company-specific factors, such as its business environment, management, balance sheet, income statement, cash flow, anticipated earnings, hidden or undervalued assets, dividends, and other related measures of value, Wellington Management seeks to identify what it considers to be overlooked or misunderstood companies with sound fundamentals. Wellington Management generally focuses on what it believes are securities of viable, growing businesses with good financial strength in industries that are temporarily out of favor and under-researched by institutions, but provide the potential for above-average total returns and sell at estimated below-average price-to-earnings multiples. Market timing is not employed, and limited consideration is given to macroeconomic analysis in establishing sector and industry weightings. Wellington Management may sell existing holdings as they approach their price targets.The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money.<br /><br /><b>Cash Position Risk</b> The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br /><br /><b>Convertible Securities Risk</b> Convertible securities are subject to the risks of both debt securities and equity securities. The values of convertible securities tend to decline as interest rates rise and, due to the conversion feature, tend to vary with fluctuations in the market value of the underlying common or preferred stock.<br /><br /><b>Foreign Investment Risk; Emerging Markets Risk; Currency Risk</b> Foreign securities, including ADRs, are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of the Fund&#8217;s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social instability, greater custody and operational risks, and greater volatility in currency exchange rates.<br /><br /><b>Liquidity Risk</b> Certain securities may be difficult (or impossible) to sell or positions difficult to close out at a desirable time and price, and the Fund may be required to hold an investment that is declining in value or be prevented from realizing capital gains.<br /><br /><b>Management Risk</b> The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br /><br /><b>Market Risk</b> The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br /><br /><b>Preferred Stock Risk</b> Preferred stocks are subject to the risks associated with other types of equity securities, as well as additional risks, such as potentially greater volatility and risks related to deferral, non-cumulative dividends, subordination, liquidity, limited voting rights, and special redemption rights.<br /><br /><b>Valuation Risk</b> The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.<br /><br /><b>Value Company Risk</b> The value investment approach entails the risk that the market will not recognize a security&#8217;s intrinsic value for a long time, or that a stock judged to be undervalued may actually be appropriately priced.<b>Annual Performance </b><br/><br/><b>Class S Shares </b><b>Performance Information </b>0.05950.05950.05260.06550.0670.04520.04660.0677<b>Performance Information </b><b>Annual Performance</b><br/><br/><b>Class S Shares </b>The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1 and 5 years, and since inception, compare with those of a broad measure of market performance. Performance for Class A shares of the Fund reflects any applicable sales charge. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More up-to-date performance information is available at http://www.massmutual.com/funds or by calling 1-888-309-3539.0.05450.04740.04440.05340.05450.03670.03760.055After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor&#8217;s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class S only. After-tax returns for other classes will vary.The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund&#8217;s performance from year to year for Class A shares. The returns in the bar chart do not reflect the deduction of any applicable Class A sales charge. If these charges were reflected, returns would be lower than those shown. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance (S&amp;P 500<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> Index) and additional indexes, including an index that provides a comparison relevant to the Fund&#8217;s allocation to fixed income investments, an index of funds with similar investment objectives, and a hypothetical custom index which comprises the MSCI<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> EAFE<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup>, Dow Jones Wilshire 5000 (full cap), and Barclays U.S. Aggregate Bond Indexes. Average annual total returns for Class A shares of the Fund reflect any applicable sales charge. Performance for shares of the Fund for periods prior to the Fund&#8217;s inception date (06/20/11) is based on the performance of a predecessor MassMutual separate investment account with substantially the same investment objective, policies, and investment strategies as those of the Fund (the &#8220;Predecessor Account&#8221;); in the case of Class A shares of the Fund, the average annual returns have been adjusted to reflect the deduction of any applicable Class A sales charge. As a mutual fund registered under the Investment Company Act of 1940, as amended (the &#8220;1940 Act&#8221;), the Fund is subject to certain requirements and restrictions under the 1940 Act and the Internal Revenue Code of 1986, as amended (the &#8220;Code&#8221;), to which the Predecessor Account was not subject. If the Predecessor Account had been subject to those requirements and restrictions, it might have achieved less favorable investment performance. Because of the difference in tax treatments of the Predecessor Account and the Fund, after-tax performance information is not presented for the five-year or ten-year periods. Past performance is not necessarily an indication of how the Fund will perform in the future. More up-to-date performance information is available at http://www.massmutual.com/funds or by calling 1-888-309-3539.0.00210.00310.00460.00460.0051You have the potential to make money by investing in the Fund, but you can also lose money.0.001<b>Non-Diversification Risk </b>Because the Fund may invest its assets in a more limited number of issuers than a diversified fund, a decline in the market value of a particular security may affect the Fund's value more than if the Fund were diversified.<b>Annual Performance </b><br/><br/><b>Class S Shares </b>0.00790.0090.010.01150.0140.017-0.001-0.001-0.001-0.001-0.001-0.0010.0070.0070.0070.0070.0070.007<B>MassMutual Select Mid Cap Growth Equity II Fund </b><b>Shareholder Fees</b> (fees paid directly from your investment)After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor&#8217;s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class S only. After-tax returns for other classes will vary.00000.00250.005<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)0.00690.0080.0090.01050.0130.016<b>INVESTMENTS, RISKS, AND PERFORMANCE </b><br/><br/><b>Principal Investment Strategies </b><b>Annual Performance</b><br/><br/><b>Class S Shares </b>0.00130.0020.0030.00450.00450.005<table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"><tr><td valign="bottom">Highest<br/>Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2Q&nbsp;&nbsp;'03,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">19.73%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">Lowest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">4Q&nbsp;&nbsp;'08,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" nowrap="nowrap">&nbsp;</td> <td valign="bottom" nowrap="nowrap" align="right">-26.27%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table>The bar chart shows changes in the Fund&#8217;s performance from year to year for Class A shares. The returns in the bar chart do not reflect the deduction of any applicable Class A sales charge. If these charges were reflected, returns would be lower than those shown. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance (S&amp;P 500<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> Index) and additional indexes, including an index that provides a comparison relevant to the Fund&#8217;s allocation to fixed income investments, an index of funds with similar investment objectives, and a hypothetical custom index which comprises the MSCI<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> EAFE<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup>, Dow Jones Wilshire 5000 (full cap), and Barclays U.S. Aggregate Bond Indexes.0.00030.00030.00030.0003<b>Average Annual Total Returns</b><br/>(for the periods ended December 31, 2012)0.00830.0090.010.01150.0140.017After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor&#8217;s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class S only. After-tax returns for other classes will vary.-0.0008-0.0005-0.0005-0.0005-0.0005-0.00051-888-309-35390.00750.00850.00950.0110.01350.0165<b>Average Annual Total Returns </b><br/>(for the periods ended December 31, 2012)http://www.massmutual.com/fundsPast performance is not necessarily an indication of how the Fund will perform in the future.The bar chart shows changes in the Fund's performance from year to year for Class S shares. The table shows how the Fund's average annual returns for 1, 5, and 10 years (or 1 year and since inception for Class Z shares) compare with those of a broad measure of market performance.<b>Average Annual Total Returns</b><br/>(for the periods ended December 31, 2012)The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money.<br /><br /> <b>Cash Position Risk </b>The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br /><br /> <b>Foreign Investment Risk; Emerging Markets Risk; Currency Risk </b>Foreign securities are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of the Fund&#8217;s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social instability, greater custody and operational risks, and greater volatility in currency exchange rates.<br /><br /> <b>Liquidity Risk </b>Certain securities may be difficult (or impossible) to sell or positions difficult to close out at a desirable time and price, and the Fund may be required to hold an investment that is declining in value or be prevented from realizing capital gains.<br /><br /> <b>Management Risk </b>The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br /><br /> <b>Market Risk </b>The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br /><br /> <b>Preferred Stock Risk </b>Preferred stocks are subject to the risks associated with other types of equity securities, as well as additional risks, such as potentially greater volatility and risks related to deferral, non-cumulative dividends, subordination, liquidity, limited voting rights, and special redemption rights.<br /><br /> <b>Smaller and Mid-Cap Company Risk </b>Market risk and liquidity risk are particularly pronounced for securities of smaller companies, which may trade less frequently and in smaller volumes than more widely-held securities, and may fluctuate in price more than other securities. Smaller companies may have limited product lines, markets, or financial resources and may be dependent on a limited management group; they may have been recently organized and have little or no track record of success.<br /><br /> <b>Valuation Risk </b>The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued. <br /><br /> <b>Value Company Risk </b>The value investment approach entails the risk that the market will not recognize a security&#8217;s intrinsic value for a long time, or that a stock judged to be undervalued may actually be appropriately priced.1-888-309-3539<b>Annual Performance </b><br/><br/><b>Class A Shares </b>http://www.massmutual.com/funds<b>Performance Information </b>Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1 and 5 years, and since inception, compare with those of a broad measure of market performance. Performance for Class A and Class N shares of the Fund reflects any applicable sales charge. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More up-to-date performance information is available at http://www.massmutual.com/funds or by calling 1-888-309-3539.The returns in the bar chart do not reflect the deduction of any applicable Class A sales charge. If these charges were reflected, returns would be lower than those shown.<b>Annual Performance <br/><br/>Class S Shares </b>The Fund seeks long-term growth of capital.<b>FEES AND EXPENSES OF THE FUND </b>This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.00000.01Except for Class N shares, the figures shown above would be the same whether you sold your shares at the end of a period or kept them. For Class N shares, you would pay the following expenses if you did not redeem your shares:<b>Average Annual Total Returns</b><br/>(for the periods ended December 31, 2012)After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor&#8217;s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class A only. After-tax returns for other classes will vary.<b>Average Annual Total Returns </b><br/>(for the periods ended December 31, 2012)The Fund began operations July, 26, 2012. Because the Fund is new, there is no table which shows how the Fund&#8217;s returns have deviated from the broad market. Performance history will be available for the Fund after it has been in operation for one calendar year.<b>MM S&amp;P<sup>&#174;</sup> Mid Cap Index Fund</b>After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor&#8217;s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class S only. After-tax returns for other classes will vary.The Fund invests primarily in equity securities of mid-capitalization companies that the Fund&#8217;s subadvisers, T. Rowe Price Associates, Inc. (&#8220;T. Rowe Price&#8221;) and Frontier Capital Management Company, LLC (&#8220;Frontier&#8221;), believe offer the potential for long-term growth. Equity securities may include common stocks, preferred stocks, securities convertible into common or preferred stock, rights, and warrants. Under normal circumstances, the Fund invests at least 80% of its net assets in a broadly diversified portfolio of common stocks of mid-cap companies whose earnings the subadvisers expect to grow at a faster rate than the average company. The subadvisers currently define &#8220;mid-cap&#8221; companies as those whose market capitalizations at the time of purchase fall within the market capitalization range of companies included in either the S&amp;P MidCap 400<sup>&#174;</sup> Index or the Russell Midcap<sup>&#174;</sup> Growth Index (as of January 31, 2013, between $393 million and $21.14 billion). The Fund may invest up to 20% of its net assets in stocks whose market capitalizations are outside of that capitalization range. The Fund typically invests most of its assets in equity securities of U.S. companies, but may invest in foreign securities and American Depositary Receipts (&#8220;ADRs&#8221;), including emerging market securities. The Fund generally will not invest more than 25% of its total assets in foreign securities. The Fund may hold a portion of its assets in cash or cash equivalents.<br/><br/>In selecting securities for the Fund, T. Rowe Price generally uses a &#8220;growth&#8221; approach, seeking to identify companies that it believes have proven products or services, a record of above-average earnings growth, demonstrated potential to sustain earnings growth, stock prices that appear to undervalue their growth prospects, or a connection to industries experiencing increasing demand. T. Rowe Price has the discretion to purchase some securities for the Fund that do not meet those investment criteria when it believes there is an opportunity for substantial appreciation.<br/><br/>In selecting securities for the Fund, Frontier employs a Growth-at-a-Reasonable-Price approach to identify the best risk/reward investment ideas in the U.S. equity mid-capitalization universe. Frontier believes that there are three key drivers of long-term, consistent performance. Frontier looks for companies that have: i) sound business models with strong management teams and secular growth prospects; ii) unrecognized earnings power; and iii) attractive valuations.<br/><br/>Each subadviser may sell securities for the Fund for a variety of reasons, such as, for example, to seek to secure gains, limit losses, or redeploy assets into more promising opportunities.2004-12-312004-12-312004-12-312004-12-312004-12-312004-12-312004-12-312004-12-310.00290.00330.00480.00480.0053<b>MM Russell 2000<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> Small Cap Index Fund</b><b>INVESTMENT OBJECTIVE </b>After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.0.00940.00980.01130.01380.01680.00850.00950.0110.01350.0165After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor&#8217;s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class S only. After-tax returns for other classes will vary.<b>Shareholder Fees</b> (fees paid directly from your investment)778797112<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)0000.05750<b>INVESTMENTS, RISKS, AND PERFORMANCE</b><br/><br/><b>Principal Investment Strategies</b>257282313360<b>Average Annual Total Returns </b><br/>(for the periods ended December 31, 2012)Under normal circumstances, the Fund invests at least 80% (and, typically, substantially all) of its net assets in the equity securities of companies included in the Russell 2000 Index (&#8220;Index&#8221;), in weightings that approximate the relative composition of the securities contained in the Index, and in Russell 2000 Index futures contracts. The Index is a widely recognized, unmanaged index representative of common stocks of smaller capitalized U.S. companies. The companies in the Index are selected according to their total market capitalization. However, companies are not selected by Frank Russell Company for inclusion in the Index because they are expected to have superior stock price performance relative to the stock market in general or other stocks in particular. As of January 31, 2013, the market capitalization range of companies included in the Index was $33 million to $5.26 billion. If the securities represented in the Index were to become concentrated in any particular industry, the Fund&#8217;s investments would likewise be concentrated in securities of issuers in that industry; the Index is not currently concentrated in any single industry.<br/><br/>The Fund is passively managed, which means it tries to duplicate the investment composition and performance of the Index by using computer programs and statistical procedures. The Fund&#8217;s subadviser, Northern Trust Investments, Inc. (&#8220;NTI&#8221;), will buy and sell securities in response to changes in the Index. The Fund may use Index futures contracts, a type of derivative, to gain exposure to the Index in lieu of investing in cash, or to reduce its exposure to the Index while it sells the securities in its portfolio. Use of Index futures contracts by the Fund may create investment leverage. Because the Fund, unlike the Index, is subject to fees and transaction expenses, the Fund&#8217;s returns are likely to be less than those of the Index. NTI expects that, under normal circumstances, the quarterly performance of the Fund, before fees and expenses, will track the performance of the Index within a 0.95 correlation coefficient.The Fund seeks to provide investment results approximating (before fees and expenses) the aggregate price and dividend performance of the securities included in the Standard &amp; Poor&#8217;s MidCap 400<sup>&#174;</sup> Index (&#8220;S&amp;P MidCap 400 Index&#8221;)*.<br/><br/>* &#8220;Standard &amp; Poor&#8217;s<sup>&#174;</sup>,&#8221; &#8220;S&amp;P<sup>&#174;</sup>,&#8221; and &#8220;S&amp;P MidCap 400<sup>&#174;</sup> Index&#8221; are trademarks of Standard &amp; Poor&#8217;s Financial Services LLC (&#8220;S&amp;P&#8221; or &#8220;Standard &amp; Poor&#8217;s&#8221;) and have been licensed for use by MassMutual. The Fund is not sponsored, endorsed, sold, or promoted by Standard &amp; Poor&#8217;s, and Standard &amp; Poor&#8217;s makes no representation regarding the advisability of investing in the Fund.The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money.<br/><br/><b>Cash Position Risk</b> The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br/><br/><b>Credit Risk</b> The Fund is subject to the risk that the issuer of an investment held by the Fund or the counterparty to a transaction entered into by the Fund will be unable or unwilling to honor its obligations.<br/><br/><b>Derivatives Risk </b> Derivatives involve risks different from, and potentially greater than, direct investments, including risks of imperfect correlation between the value of derivatives and underlying assets, counterparty default, potential losses that partially or completely offset gains, and illiquidity. Derivatives can create investment leverage and be highly volatile. Derivatives may result in losses greater than the amount invested. If the value of a derivative does not correlate well with the particular market or asset class the derivative is designed to provide exposure to, the derivative may not have the effect anticipated. Many derivatives are traded in the over-the-counter market and not on exchanges.<br/><br/><b>Indexing Risk</b> The Fund&#8217;s performance may not track the performance of the index exactly due to a number of factors, including fees and expenses of the Fund, and the Fund&#8217;s cash positions.<br/><br/><b>Industry Concentration Risk</b> The Fund may concentrate its assets in a particular industry or group of industries. This could increase the volatility of the Fund&#8217;s portfolio, and the Fund&#8217;s performance may be more susceptible to developments affecting issuers in that industry or group of industries than if the Fund invested more broadly.<br/><br/><b>Management Risk</b> The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br/><br/><b>Market Risk</b> The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br/><br/><b>Smaller and Mid-Cap Company Risk</b> Market risk and liquidity risk are particularly pronounced for securities of smaller companies, which may trade less frequently and in smaller volumes than more widely-held securities, and may fluctuate in price more than other securities. Smaller companies may have limited product lines, markets, or financial resources and may be dependent on a limited management group; they may have been recently organized and have little or no track record of success.<br/><br/><b>Valuation Risk</b> The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.After-tax returns are shown for Class A only. After-tax returns for other classes will vary.45349454862800000.01The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money. <br/><br/><b>Cash Position Risk</b> The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested. <br/><br/><b>Convertible Securities Risk</b> Convertible securities are subject to the risks of both debt securities and equity securities. The values of convertible securities tend to decline as interest rates rise and, due to the conversion feature, tend to vary with fluctuations in the market value of the underlying common or preferred stock. <br/><br/><b>Foreign Investment Risk; Emerging Markets Risk; Currency Risk</b> Foreign securities, including ADRs, are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of the Fund&#8217;s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social instability, greater custody and operational risks, and greater volatility in currency exchange rates. <br/><br/><b>Liquidity Risk</b> Certain securities may be difficult (or impossible) to sell or positions difficult to close out at a desirable time and price, and the Fund may be required to hold an investment that is declining in value or be prevented from realizing capital gains. <br/><br/><b>Management Risk</b> The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses. <br/><br/><b>Market Risk</b> The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services. <br/><br/><b>Preferred Stock Risk</b> Preferred stocks are subject to the risks associated with other types of equity securities, as well as additional risks, such as potentially greater volatility and risks related to deferral, non-cumulative dividends, subordination, liquidity, limited voting rights, and special redemption rights. <br/><br/><b>REIT Risk</b> Investments in REITs may be subject to risks similar to those associated with direct investment in real estate, as well as additional risks associated with equity investments. <br/><br/><b>Valuation Risk</b> The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued. <br/><br/><b>Value Company Risk</b> The value investment approach entails the risk that the market will not recognize a security&#8217;s intrinsic value for a long time, or that a stock judged to be undervalued may actually be appropriately priced.<b>Performance Information </b>The Fund normally invests at least 80% of its net assets in stocks, securities convertible into stocks, and other securities, such as warrants and stock rights, whose value is based on stock prices. The Fund typically invests most of its assets in securities of U.S. companies, but may invest up to 25% of its total assets in foreign securities and American Depositary Receipts (&#8220;ADRs&#8221;), including emerging market securities. The Fund is managed by two subadvisers, each being responsible for a portion of the portfolio, but not necessarily equally weighted. The Fund may invest in real estate investment trusts (&#8220;REITs&#8221;) and Rule 144A securities. The Fund may hold a portion of its assets in cash or cash equivalents. <br/><br/>Brandywine Global Investment Management, LLC&#8217;s (&#8220;Brandywine Global&#8221;) strategy employs a disciplined combination of quantitative and fundamental management as well as a stock elimination process. From a quantitatively derived universe of attractive large cap stocks with low valuations, Brandywine Global applies a fundamental investment approach which seeks to identify the stocks least likely to outperform and eliminates them from the portfolio. Brandywine Global&#8217;s investment process attempts to enhance its returns relative to a pure quantitative universe while still maintaining the consistent characteristics and diversification of that original universe. This diversification results in a relatively large number of holdings (typically greater than 150), which helps to reduce risk and control trading costs. <br/><br/>Brandywine Global utilizes a risk analysis and optimization system in conjunction with its portfolio management process and a common sense overview of sector and industry allocation to strive to maintain a portfolio that considers exposures and their risks in relation to the benchmark. While Brandywine Global does not attempt to match an index, it is aware of exposures relative to the Russell 1000<sup>&#174;</sup> Value Index and makes efforts to manage the risk of exposures that differ from the benchmark while not impeding performance potential. <br/><br/>Brandywine Global generally deems eligible for sale any stock (i) which no longer maintains value characteristics including stocks whose Price-to-Earnings (P/E) or Price-to-Book (P/B) ratios are deemed expensive relative to the market, (ii) whose capitalization falls materially below the smallest stock Brandywine Global would purchase for the portfolio, or (iii) which exhibits any combination of the following characteristics: adverse stock price momentum, adverse share issuance, or deteriorating fundamentals. Brandywine Global may also make a sale based on a holding&#8217;s potential impact on the entire portfolio in an effort to lessen the potential risk from differences from the benchmark. In addition, situations may arise, such as tender offers or favorable prices, where Brandywine Global may sell a stock that does not meet these requirements. <br/><br/>Loomis, Sayles &#038; Company, L.P. (&#8220;Loomis Sayles&#8221;) generally looks for companies that it believes are undervalued by the market in relation to earnings, dividends, assets, and growth prospects. Loomis Sayles&#8217; investments may include companies that have suffered significant business problems but that Loomis Sayles believes have favorable prospects for recovery. Loomis Sayles seeks to identify companies that it believes are, among other things, attractively valued based on Loomis Sayles&#8217; estimate of intrinsic value. Loomis Sayles generally seeks to find value by selecting individual stocks that it believes are attractive, rather than by attempting to achieve investment growth by rotating the portfolio&#8217;s holdings among various sectors of the economy.<b>FEES AND EXPENSES OF THE FUND </b>1018110312201393<b>MassMutual RetireSMART<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">SM</sup> Moderate Fund </b><b>Example </b>This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:<b>Example </b>000000.0575This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:<b>INVESTMENT OBJECTIVE </b>000000The Fund seeks to achieve as high a total rate of return on an annual basis as is considered consistent with prudent investment risk and the preservation of capital.0000<b>FEES AND EXPENSES OF THE FUND </b><b>MassMutual Select Strategic Bond Fund</b>This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 107 of the Fund&#8217;s Prospectus or from your financial professional.0.0010.0010.0010.0010.0010.001<b>Example </b>This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.This Fund seeks a superior total rate of return by investing in fixed income instruments.000000.0025<b>FEES AND EXPENSES OF THE FUND </b>This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 37% of the average value of its portfolio.0.0020.0030.00450.00550.0070.006<b>Shareholder Fees</b> (fees paid directly from your investment)<b>Principal Risks </b>7052680.00070.00070.00070.00070.00070.0007<b>Shareholder Fees</b> (fees paid directly from your investment)98853112929180.00370.00470.00620.00720.00870.0102<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)21542004<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)<table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"><tr><td valign="bottom">Highest<br/>Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">3Q&nbsp;&nbsp;'09,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">18.89%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">Lowest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">4Q&nbsp;&nbsp;'08,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" nowrap="nowrap">&nbsp;</td> <td valign="bottom" nowrap="nowrap" align="right">-21.80%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table>-0.0011-0.0011-0.0011-0.0011-0.0011-0.00110.00750.00750.00750.00750.0075000000.01<b>Example </b><b>Example </b>0000.00250.005This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:0.00260.00360.00510.00610.00760.00910.0010.0020.00350.00350.0040.00080.00080.00080.00080.0008The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 109% of the average value of its portfolio.0.00930.01030.01180.01430.017327375262786631081401872192678711680.00120.00160.00240.0024<b>MassMutual Select Small Cap Growth Equity Fund</b>531The Fund seeks to achieve as high a total rate of return on an annual basis as is considered consistent with prudent investment risk and the preservation of capital.918<b>Example </b>This Fund seeks long-term capital appreciation.2004<b>FEES AND EXPENSES OF THE FUND </b><b>FEES AND EXPENSES OF THE FUND </b>This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 107 of the Fund&#8217;s Prospectus or from your financial professional.This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:Except for Class N shares, the figures shown above would be the same whether you sold your shares at the end of a period or kept them. For Class N shares, you would pay the following expenses if you did not redeem your shares:-0.0009-0.0003-0.0003-0.0003-0.00030.00790.00910.01160.0083The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money.<br/><br/><b>Cash Position Risk</b> The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br/><br/><b>Convertible Securities Risk</b> Convertible securities are subject to the risks of both debt securities and equity securities. The values of convertible securities tend to decline as interest rates rise and, due to the conversion feature, tend to vary with fluctuations in the market value of the underlying common or preferred stock.<br/><br/><b>Foreign Investment Risk; Emerging Markets Risk; Currency Risk</b> Foreign securities, including ADRs, are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of the Fund&#8217;s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social instability, greater custody and operational risks, and greater volatility in currency exchange rates.<br/><br/><b>Growth Company Risk</b> The prices of growth securities are often more sensitive to market fluctuations because of their heavy dependence on future earnings expectations, and can be more volatile than the market in general.<br/><br/><b>Liquidity Risk</b> Certain securities may be difficult (or impossible) to sell or positions difficult to close out at a desirable time and price, and the Fund may be required to hold an investment that is declining in value or be prevented from realizing capital gains.<br/><br/><b>Management Risk</b> The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br/><br/><b>Market Risk</b> The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br/><br/><b>Preferred Stock Risk</b> Preferred stocks are subject to the risks associated with other types of equity securities, as well as additional risks, such as potentially greater volatility and risks related to deferral, non-cumulative dividends, subordination, liquidity, limited voting rights, and special redemption rights.<br/><br/><b>Smaller and Mid-Cap Company Risk</b> Market risk and liquidity risk are particularly pronounced for securities of smaller companies, which may trade less frequently and in smaller volumes than more widely- held securities, and may fluctuate in price more than other securities. Smaller companies may have limited product lines, markets, or financial resources and may be dependent on a limited management group; they may have been recently organized and have little or no track record of success.<br/><br/><b>Valuation Risk</b> The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.<b>Portfolio Turnover </b>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 417% of the average value of its portfolio.<b>Shareholder Fees</b> (fees paid directly from your investment)<b>INVESTMENTS, RISKS, AND PERFORMANCE </b><br/><br/><b>Principal Investment Strategies </b><b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)<b>Example </b>This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:708292107700263This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:242277308355983526<b>Shareholder Fees</b> (fees paid directly from your investment)<b>Portfolio Turnover </b>429489543623128891496910991216138921502000The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. For the period July 26, 2012 (commencement of operations) through December 31, 2012, the Fund&#8217;s portfolio turnover rate was 11% of the average value of its portfolio.Under normal circumstances, the Fund invests at least 80% of its net assets in U.S. dollar-denominated fixed income securities and other debt instruments of domestic and foreign entities, including corporate bonds, securities issued or guaranteed as to principal or interest by the U.S. government or its agencies or instrumentalities, mortgage-backed or asset-backed securities, and money market instruments. The Fund may invest up to 20% of its total assets in non-U.S. dollar-denominated securities of these entities. The Fund may also invest in emerging markets. The Fund may but will not necessarily engage in foreign currency transactions, including forward contracts, options on currency, futures contracts, and swap contracts, to attempt to protect against adverse changes in currency exchange rates. In pursuing its investment objective, the Fund may (but is not obligated to) use a wide variety of additional exchange-traded and over-the-counter derivatives, including futures contracts (for hedging purposes or to adjust various portfolio characteristics, including the duration (interest rate volatility) of the Fund&#8217;s portfolio); interest rate swaps (for hedging purposes or to adjust various portfolio characteristics, including the duration (interest rate volatility) of the Fund&#8217;s portfolio); credit default swaps (for hedging purposes, to earn additional income, or as a substitute for direct investments); and hybrid instruments (as a substitute for direct investments). The Fund may also purchase and sell exchange-traded and over-the-counter options for hedging purposes, to adjust various portfolio characteristics, including the duration (interest rate volatility) of the Fund&#8217;s portfolio, or as a substitute for direct investments. Use of derivatives by the Fund may create investment leverage. The Fund may also invest in money market securities, including commercial paper. The Fund may hold a portion of its assets in cash or cash equivalents. <br/><br/>The Fund invests primarily in investment grade securities (rated Baa or higher by Moody&#8217;s or BBB or higher by Standard &amp; Poor&#8217;s, or, if unrated, determined by the subadviser to be of comparable quality), but may invest up to 25% of the portfolio in below investment grade securities (&#8220;junk&#8221; or &#8220;high yield&#8221; bonds), including securities in default. In the event that a security is downgraded after its purchase by the Fund, the Fund may continue to hold the security if the Fund&#8217;s subadviser, Western Asset Management Company (&#8220;Western Asset&#8221;), considers that doing so would be consistent with the Fund&#8217;s investment objective. The Fund may invest in domestic and foreign issuer loans and loan participations that pay interest at rates that float or reset periodically at a margin above a generally recognized base lending rate. Certain fixed income securities in which the Fund may invest pay interest at variable or floating rates. Variable rate securities tend to reset at specified intervals, while floating rate securities may reset upon a change in a specified index rate. In most cases, these reset provisions reduce the impact of changes in market interest rates on the value of the security. However, some securities do not track the underlying index directly, but reset based on formulas that may produce a leveraging effect; others may also provide for interest payments that vary inversely with market rates. The market prices of these securities may fluctuate significantly when interest rates change. The Fund may invest in loans of companies whose financial condition is troubled or uncertain and that may be involved in bankruptcy proceedings, reorganizations, or financial restructurings. The Fund may also acquire, and subsequently hold, warrants and other equity interests. <br/><br/> The Fund&#8217;s effective duration is normally expected to be between three and seven years. If the Fund&#8217;s effective duration falls outside of this range, the Fund will take action to bring it within its expected range within a reasonable period of time. Duration measures the price sensitivity of a bond to changes in interest rates. Duration is the dollar weighted average time to maturity of a bond utilizing the present value of all future cash flows. Effective duration measures the price sensitivity of a bond with embedded options to changes in interest rates. It provides a more accurate measure of price volatility when, due to the embedded options, the cash flow characteristics of the bond change as interest rates shift.<br/><br/> Western Asset employs an opportunistic approach that seeks to capitalize on inefficiencies in fixed income markets to add incremental value to the Fund&#8217;s portfolio. Western Asset places significant emphasis on risk management, seeking to exceed returns of the Fund&#8217;s benchmark, while approximating benchmark risk. When making investment decisions, Western Asset focuses on sector allocation, issue selection, duration weighting, and term structure, among other considerations. Western Asset generally will buy and sell securities for the Fund based on fundamental analysis and its opinion of value in each sector with the intent to minimize exposure to sectors that Western Asset believes are fully valued or overvalued and to allocate capital to sectors that Western Asset believes are undervalued. In seeking to meet its objective, the Fund emphasizes diversification, the use of multiple strategies and identification of long-term trends. The three key factors that determine the allocation decisions for the Fund are: Western Asset&#8217;s outlook for fundamental economic activity, its review of historical yield spreads for corporate debt versus Treasuries, and its evaluation of changes in credit quality and its impact on prices. Western Asset will determine the portion of the Fund&#8217;s assets to be allocated to non-U.S. dollar denominated securities from time to time. Western Asset Management Company Limited (&#8220;Western Asset Limited&#8221;), an affiliate of Western Asset, has subadvisory responsibility for Western Asset&#8217;s non-U.S. dollar denominated investments. Western Asset Limited will select the foreign country and currency composition based on its evaluation of relative interest rates, inflation rates, exchange rates, monetary and fiscal policies, trade and current account balances, and any other specific factors Western Asset Limited believes relevant.<br/><br/>The Fund expects that it will engage in active and frequent trading and so will typically have a relatively high portfolio turnover rate.<b>Portfolio Turnover </b>March 31, 20140.22For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds.25000You have the potential to make money by investing in the Fund, but you can also lose money.<b> Principal Risks </b>The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years (or 1 year and since inception for Class Z shares) compare with those of a broad measure of market performance.<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 104% of the average value of its portfolio.1-888-309-3539http://www.massmutual.com/fundsPast performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.<b>INVESTMENTS, RISKS, AND PERFORMANCE<br/><br/>Principal Investment Strategies</b>0000.05750Performance for Class A and Class N shares of the Fund reflects any applicable sales charge.Performance for Class A and Class N shares of the Fund reflects any applicable sales charge.<b>Principal Risks </b>After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.After-tax returns are shown for Class S only. After-tax returns for other classes will vary.00000.01This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:<b>Performance Information </b>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 49% of the average value of its portfolio.After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.<b>INVESTMENTS, RISKS, AND PERFORMANCE<br/><br/>Principal Investment Strategies</b>After-tax returns are shown for Class S only. After-tax returns for other classes will vary.<b>INVESTMENTS, RISKS, AND PERFORMANCE </b><br/><br/><b>Principal Investment Strategies </b>Under normal circumstances, the Fund invests at least 80% (and, typically, substantially all) of its net assets in the equity securities of companies included in the S&amp;P MidCap 400 Index (&#8220;Index&#8221;), in weightings that approximate the relative composition of the securities contained in the Index, and in S&amp;P MidCap 400 Index futures contracts. The Index is a widely recognized, unmanaged index representative of common stocks of mid-capitalized U.S. companies. The companies chosen for inclusion in the Index tend to be industry leaders within the U.S. economy as determined by Standard &amp; Poor&#8217;s<sup>&#174;</sup>. However, companies are not selected by Standard &amp; Poor&#8217;s for inclusion in the Index because they are expected to have superior stock price performance relative to the market in general or other stocks in particular. As of January 31, 2013, the market capitalization range of companies included in the Index was $474 million to $16.92 billion. If the securities represented in the Index were to become concentrated in any particular industry, the Fund&#8217;s investments would likewise be concentrated in securities of issuers in that industry; the Index is not currently concentrated in any single industry.<br/><br/>The Fund is passively managed, which means it tries to duplicate the investment composition and performance of the Index by using computer programs and statistical procedures. The Fund&#8217;s subadviser, Northern Trust Investments, Inc. (&#8220;NTI&#8221;), will buy and sell securities in response to changes in the Index. The Fund may use Index futures contracts, a type of derivative, to gain exposure to the Index in lieu of investing in cash, or to reduce its exposure to the Index while it sells the securities in its portfolio. Use of Index futures contracts by the Fund may create investment leverage. Because the Fund, unlike the Index, is subject to fees and transaction expenses, the Fund&#8217;s returns are likely to be less than those of the Index. NTI expects that, under normal circumstances, the quarterly performance of the Fund, before fees and expenses, will track the performance of the Index within a 0.95 correlation coefficient.<b>Principal Risks </b>-0.0853-0.3261The Fund invests primarily in equity securities of smaller companies that the subadvisers believe offer potential for long-term growth. Under normal circumstances, the Fund invests at least 80% of its net assets in the securities of companies whose market capitalizations at the time of purchase are within the market capitalization range of companies included in the Russell 2000<sup>&#174;</sup> Index or the S&amp;P SmallCap 600 Index (as of January 31, 2013, between $33 million and $5.26 billion). Equity securities may include common stocks, preferred stocks, securities convertible into common or preferred stock, rights, and warrants. While most assets typically will be invested in common stocks of U.S. companies, the Fund also may invest up to 20% of its total assets in foreign securities, including emerging market securities. The Fund may hold a portion of its assets in cash or cash equivalents.<br/><br/>The Fund is managed by three subadvisers, Wellington Management Company, LLP ("Wellington Management"), Waddell &amp; Reed Investment Management Company ("Waddell &amp; Reed"), and Timberline Asset Management LLC ("Timberline"), each being responsible for a portion of the portfolio, but not necessarily equally weighted. Each subadviser employs a growth-based investment approach and may perform a number of analyses in considering whether to buy or sell a security for the Fund. Each of the subadvisers uses a combination of fundamental and quantitative analyses to identify small-cap companies that it believes are experiencing or will experience rapid earnings or revenue growth. A subadviser may consider selling a security for the Fund if, for example, in its judgment, target prices are reached, future upside potential is limited, company fundamentals are no longer attractive, superior purchase candidates are identified, or market capitalization ceilings are exceeded.0.30020000.057500.234300000.0100000.057500.00640.00640.00640.00640.0064<b>Principal Risks </b>-0.02840.16350000.00250.005000000.010.00180.00310.00430.00430.0048<table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="left"><tr> <td valign="bottom">Highest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2Q&nbsp;&nbsp;&#8217;09,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">14.10%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">Lowest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">4Q&nbsp;&nbsp;&#8217;08,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom"></td> <td valign="bottom" align="right">-15.18%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table>0.00820.00950.01070.01320.01620.13260.13130.08790.13090.12970.06310.11270.1526-0.0006-0.0013-0.0009-0.0013-0.00110.03120.03680.02830.04310.04440.03910.0451<b>INVESTMENT OBJECTIVE </b>0.00760.00820.00980.01190.01510.07520.08910.0920.09850.10.09050.101The Fund invests primarily in equity securities from developed countries included in the MSCI EAFE&#174; Value Index, which is the Fund&#8217;s benchmark. The Fund may invest up to 15% of its total assets in equity securities of issuers in emerging markets countries. The Fund typically does not invest in U.S. companies. The Fund may invest a substantial part of its assets in just one region or country.<br /><br />Equity securities in which the Fund invests may include common stocks, preferred stocks, securities convertible into common or preferred stock, depositary receipts, rights and warrants to buy common stocks, and privately placed securities.<br/><br/> The Fund may invest in securities denominated in U.S. dollars, major reserve currencies, and currencies of other countries in which it can invest. <br /><br />The Fund may but will not necessarily engage in foreign currency forward contracts to attempt to protect against adverse changes in currency exchange rates. The Fund may use futures contracts as a substitute for direct investments. Use of derivatives by the Fund may create investment leverage. The Fund may hold a portion of its assets in cash or cash equivalents.<br /><br />In choosing stocks for the Fund, the Fund&#8217;s subadviser, J.P. Morgan Investment Management Inc. (&#8220;J.P. Morgan&#8221;), uses a dividend discount model to quantify its fundamental research, producing a ranking of companies in each industry group according to their relative value. J.P. Morgan then buys and sells stocks, using the research and valuation rankings, as well as its assessment of other factors, including:<ul type="square"><li style="margin-left:-20px">&nbsp;&nbsp;&nbsp;&nbsp;value characteristics such as low price to book and price to earnings ratios;</li></ul><ul type="square"><li style="margin-left:-20px">&nbsp;&nbsp;&nbsp;&nbsp;catalysts that could trigger a change in a stock&#8217;s price;</li></ul><ul type="square"><li style="margin-left:-20px">&nbsp;&nbsp;&nbsp;&nbsp;potential reward compared to potential risk; and</li></ul><ul type="square"><li style="margin-left:-20px">&nbsp;&nbsp;&nbsp;&nbsp;temporary mispricings caused by market overreactions.</li></ul>The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money.<br /><br /><b>Cash Position Risk</b> The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br /><br /><b>Convertible Securities Risk</b> Convertible securities are subject to the risks of both debt securities and equity securities. The values of convertible securities tend to decline as interest rates rise and, due to the conversion feature, tend to vary with fluctuations in the market value of the underlying common or preferred stock.<br /><br /><b>Credit Risk</b> The Fund is subject to the risk that the issuer of an investment held by the Fund or the counterparty to a transaction entered into by the Fund will be unable or unwilling to honor its obligations.<br /><br /><b>Derivatives Risk</b> Derivatives involve risks different from, and potentially greater than, direct investments, including risks of imperfect correlation between the value of derivatives and underlying assets, counterparty default, potential losses that partially or completely offset gains, and illiquidity. Derivatives can create investment leverage and be highly volatile. Derivatives may result in losses greater than the amount invested. If the value of a derivative does not correlate well with the particular market or asset class the derivative is designed to provide exposure to, the derivative may not have the effect anticipated. Many derivatives are traded in the over-the-counter market and not on exchanges.<br /><br /><b>Foreign Investment Risk; Emerging Markets Risk; Currency Risk</b> Foreign securities, including ADRs, are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of the Fund&#8217;s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social instability, greater custody and operational risks, and greater volatility in currency exchange rates.<br /><br /><b>Geographic Focus Risk</b> When the Fund focuses investments on a particular country, group of countries, or geographic region, its performance will be closely tied to the market, currency, economic, political, or regulatory conditions and developments in those countries or that region, and could be more volatile than the performance of more geographically diversified funds.<br /><br /><b>Liquidity Risk</b> Certain securities may be difficult (or impossible) to sell or positions difficult to close out at a desirable time and price, and the Fund may be required to hold an investment that is declining in value or be prevented from realizing capital gains.<br /><br /><b>Management Risk</b> The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br /><br /><b>Market Risk</b> The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br /><br /><b>Preferred Stock Risk</b> Preferred stocks are subject to the risks associated with other types of equity securities, as well as additional risks, such as potentially greater volatility and risks related to deferral, non-cumulative dividends, subordination, liquidity, limited voting rights, and special redemption rights.<br /><br /><b>Smaller and Mid-Cap Company Risk</b> Market risk and liquidity risk are particularly pronounced for securities of smaller companies, which may trade less frequently and in smaller volumes than more widely-held securities, and may fluctuate in price more than other securities. Smaller companies may have limited product lines, markets, or financial resources and may be dependent on a limited management group; they may have been recently organized and have little or no track record of success.<br /><br /><b>Valuation Risk</b> The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.<br /><br /><b>Value Company Risk</b> The value investment approach entails the risk that the market will not recognize a security&#8217;s intrinsic value for a long time, or that a stock judged to be undervalued may actually be appropriately priced.Except for Class N shares, the figures shown above would be the same whether you sold your shares at the end of a period or kept them. For Class N shares, you would pay the following expenses if you did not redeem your shares:16352691420000.23790.0995<table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="left"><tr> <td valign="bottom">Highest <br/>Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2Q&nbsp;&nbsp;&#8217;09,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">27.65%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">Lowest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">4Q&nbsp;&nbsp;&#8217;08,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom"></td> <td valign="bottom" align="right">-28.86%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table>0.05280.00850.00850.00850.00850.00850.00750.00750.00750.00750.00750.00750.0933Highest Quarter:2012-03-310000.00250.0050.059600000.00250.0050.2014-0.2681Lowest Quarter:0.00280.00320.00470.00470.00522008-12-310.2699-0.27260.13220.00210.0030.00450.00450.005-0.00280.00010.00010.00010.00010.00010.1213<b>Portfolio Turnover </b>0.01140.01180.01330.01580.0188The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 30% of the average value of its portfolio.0.00840.00960.01050.0120.01750.014595105120712276<b>FEES AND EXPENSES OF THE FUND </b>2963283751001545This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.51556964913129390.00740.00860.00950.0110.01350.01650.045411431259219014322041The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money.<br/><br/><b>Bank Loans Risk</b> Bank loans in which the Fund may invest have similar risks to lower-rated fixed income securities. Changes in the financial condition of the borrower or economic conditions or other circumstances may reduce the capacity of the borrower to make principal and interest payments on such instruments and may lead to defaults. Senior secured bank loans are supported by collateral; however the value of the collateral may be insufficient to cover the amount owed to the Fund. If the Fund relies on a third party to administer a loan, the Fund is subject to the risk that the third party will fail to perform its obligations. In addition, if the Fund holds only a participation interest in a loan made by a third party, the Fund&#8217;s receipt of payments on the loan will be dependent on the third party&#8217;s willingness and ability to make those payments to the Fund.<br/><br/><b>Cash Position Risk</b> The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br/><br/><b>Credit Risk</b> The Fund is subject to the risk that the issuer of an investment held by the Fund or the counterparty to a transaction entered into by the Fund will be unable or unwilling to honor its obligations.<br/><br/><b>Derivatives Risk </b> Derivatives involve risks different from, and potentially greater than, direct investments, including risks of imperfect correlation between the value of derivatives and underlying assets, counterparty default, potential losses that partially or completely offset gains, and illiquidity. Derivatives can create investment leverage and be highly volatile. Derivatives may result in losses greater than the amount invested. If the value of a derivative does not correlate well with the particular market or asset class the derivative is designed to provide exposure to, the derivative may not have the effect anticipated. Many derivatives are traded in the over-the-counter market and not on exchanges.<br/><br/><b>Fixed Income Securities Risk </b> The values of fixed income securities typically will decline during periods of rising interest rates, and can also decline in response to changes in the financial condition of the issuer, borrower, counterparty, or underlying collateral assets, or changes in market, economic, industry, political, and regulatory conditions affecting a particular type of security or issuer or fixed income securities generally. Fixed income securities are subject to interest rate risk (the risk that the value of a fixed income security will fall when interest rates rise), extension risk (the risk that the average life of a security will be extended through a slowing of principal payments), prepayment risk (the risk that a security will be prepaid and the Fund will be required to reinvest at a less favorable rate), and credit risk.<br/><br/><b>Foreign Investment Risk; Emerging Markets Risk; Currency Risk </b>Foreign securities are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of the Fund&#8217;s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social instability, greater custody and operational risks, and greater volatility in currency exchange rates.<br/><br/><b>Frequent Trading/Portfolio Turnover Risk</b> Portfolio turnover generally involves some expense to the Fund and may result in the realization of taxable capital gains (including short-term gains). The trading costs and tax effects associated with portfolio turnover may adversely affect the Fund&#8217;s performance.<br/><br/><b>Leveraging Risk</b> Instruments and transactions, including derivatives, that create leverage may cause the value of an investment in the Fund to be more volatile and all other risks will tend to be compounded.<br/><br/><b>Liquidity Risk</b> Certain securities may be difficult (or impossible) to sell or positions difficult to close out at a desirable time and price, and the Fund may be required to hold an investment that is declining in value or be prevented from realizing capital gains.<br/><br/><b>Lower-Rated Fixed Income Securities Risk</b> Lower-rated securities, commonly known as &#8220;junk&#8221; or &#8220;high yield&#8221; bonds, have speculative characteristics and involve greater volatility of price and yield, greater risk of loss of principal and interest, and generally reflect a greater possibility of an adverse change in financial condition that could affect an issuer&#8217;s ability to honor its obligations.<br/><br/><b>Management Risk</b> The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br/><br/><b>Market Risk</b> The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br/><br/><b>Mortgage- and Asset-Backed Securities Risk </b> Investments in mortgage- and asset-backed securities subject the Fund to credit risk, interest rate risk, extension risk, and prepayment risk, among other risks. Mortgage-backed and asset-backed securities not issued by a government agency generally involve greater credit risk than securities issued by government agencies. The types of mortgages (for example, residential or commercial mortgages) underlying securities held by the Fund may differ and be affected differently by market factors. Investments that receive only the interest portion or the principal portion of payments on the underlying assets may be more volatile than other investments. The market for mortgage- and asset-backed securities has recently experienced high volatility and a lack of liquidity. As a result, the value of many of these securities has significantly declined.<br/><br/><b>U.S. Government Securities Risk </b> Obligations of certain U.S. government agencies and instrumentalities are not backed by the full faith and credit of the U.S. government, and there can be no assurance that the U.S. government would provide financial support to such agencies and instrumentalities.<br/><br/><b>Valuation Risk </b> The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.<b>INVESTMENTS, RISKS, AND PERFORMANCE </b><br/><br/><b>Principal Investment Strategies </b><b>Principal Risks </b>The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money.<br/><br/><b>Cash Position Risk</b> The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br/><br/><b>Credit Risk</b> The Fund is subject to the risk that the issuer of an investment held by the Fund or the counterparty to a transaction entered into by the Fund will be unable or unwilling to honor its obligations.<br/><br/><b>Derivatives Risk </b> Derivatives involve risks different from, and potentially greater than, direct investments, including risks of imperfect correlation between the value of derivatives and underlying assets, counterparty default, potential losses that partially or completely offset gains, and illiquidity. Derivatives can create investment leverage and be highly volatile. Derivatives may result in losses greater than the amount invested. If the value of a derivative does not correlate well with the particular market or asset class the derivative is designed to provide exposure to, the derivative may not have the effect anticipated. Many derivatives are traded in the over-the-counter market and not on exchanges.<br/><br/><b>Indexing Risk</b> The Fund&#8217;s performance may not track the performance of the index exactly due to a number of factors, including fees and expenses of the Fund, and the Fund&#8217;s cash positions.<br/><br/><b>Industry Concentration Risk</b> The Fund may concentrate its assets in a particular industry or group of industries. This could increase the volatility of the Fund&#8217;s portfolio, and the Fund&#8217;s performance may be more susceptible to developments affecting issuers in that industry or group of industries than if the Fund invested more broadly.<br/><br/><b>Management Risk</b> The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br/><br/><b>Market Risk</b> The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br/><br/><b>Smaller and Mid-Cap Company Risk</b> Market risk and liquidity risk are particularly pronounced for securities of smaller companies, which may trade less frequently and in smaller volumes than more widely-held securities, and may fluctuate in price more than other securities. Smaller companies may have limited product lines, markets, or financial resources and may be dependent on a limited management group; they may have been recently organized and have little or no track record of success.<br/><br/><b>Valuation Risk</b> The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.<b>Performance Information </b>7884100689254The Fund began operations July 26, 2012. Because the Fund is new, there is no table which shows how the Fund&#8217;s returns have deviated from the broad market. Performance history will be available for the Fund after it has been in operation for one calendar year.0.1012256290331957500727684678Highest Quarter:2009-06-3044951358112458710.141224237262896Lowest Quarter:<b>Shareholder Fees</b> (fees paid directly from your investment)<b>Shareholder Fees </b>(fees paid directly from your investment)100811551298206319132008-12-31<b>INVESTMENTS, RISKS, AND PERFORMANCE</b><br/><br/><b>Principal Investment Strategies</b><b>Performance Information </b>-0.1518<b>Annual Fund Operating Expenses </b>(expenses that you pay each year as a percentage of the value of your investment)The Fund seeks to achieve its objective by investing in both equity and debt securities, including money market securities and other short-term debt obligations, of issuers located around the world, including emerging markets, without limitation on the percentage of assets the Fund can invest in a particular type of security. Equity securities may include common stocks, preferred stocks, securities convertible into common or preferred stock, rights, and warrants, of issuers of any size. The Fund may buy debt securities of varying maturities, debt securities paying a fixed or floating rate of interest, and debt securities of any kind, including, by way of example, securities issued or guaranteed by the U.S. Government or its agencies and instrumentalities, by foreign governments or international agencies or supranational entities, or by domestic or foreign private issuers, mortgage-backed or other asset-backed securities, debt securities convertible into equity securities, inflation-indexed bonds, structured notes, and loan participations. Debt securities in which the Fund invests will primarily be investment grade, meaning that they will be rated at least Baa by Moody's or BBB by Standard &amp; Poor's, or if unrated will be considered by the Fund's subadviser, BlackRock Investment Management, LLC ("BlackRock"), to be of comparable quality. The Fund may invest up to 35% of its total assets in below investment grade debt securities ("junk" or "high yield" bonds), corporate loans, and distressed securities. In the event that a security is downgraded after its purchase by BlackRock, BlackRock may continue to hold the security if BlackRock considers that doing so would be consistent with the Fund's investment objective. The Fund may hold a portion of its assets in cash or cash equivalents.<br/><br/> The Fund seeks to reduce volatility by allocating its assets broadly across markets, industries, and issuers and without geographic or market capitalization limits. BlackRock uses the Fund's investment flexibility to create a portfolio of assets allocated between equity and debt securities. The Fund may but will not necessarily engage in foreign currency transactions, including forward contracts, options on currency, futures contracts, and swap contracts, to take long or short positions in foreign currencies in order to enhance the Fund's investment return or to attempt to protect against adverse changes in currency exchange rates. Use of derivatives by the Fund may create investment leverage.<br/><br/> Under normal circumstances, the Fund anticipates it will allocate a substantial amount (approximately 40% or more &#151; unless market conditions are not deemed favorable by BlackRock, in which case the Fund would invest at least 30%) of its total assets in securities of (i) foreign government issuers, (ii) issuers organized or located outside the U.S., (iii) issuers which primarily trade in a market located outside the U.S., or (iv) issuers doing a substantial business outside the U.S., which the Fund considers to be companies that derive at least 50% of their revenue or profits from business outside the U.S. or have at least 50% of their sales or assets outside the U.S. The Fund will allocate its assets among various regions and countries, including the U.S. (but in no less than three different countries).<br/><br/> The Fund may invest a portion of its assets in securities related to real assets (like real estate or precious metals-related securities) such as stock, bonds, or convertible bonds issued by real estate investment trusts ("REITs") or companies that mine precious metals. The Fund may sell securities short for hedging or investment purposes. The Fund will not make a short sale, other than a short sale "against the box," if, after giving effect to such sale, the market value of all securities sold short exceeds 20% of its total assets.<br/><br/> The Fund may seek to provide exposure to the investment returns of real assets that trade in the commodity markets, including precious metals, agriculture, energy, livestock, or industrial metals. The Fund may obtain such exposure through, among other things, investments in issuers in commodities-related industries or in other investment vehicles that invest directly in commodities, commodities-related companies, or commodities-related investments, such as exchange-traded funds. The Fund may, but will not necessarily, invest in commodity-linked derivative instruments, including futures contracts, options, and swaps. In order to earn qualifying income under applicable tax rules from commodities and certain commodities-related investments, the Fund may invest up to 25% of its total assets in the MassMutual Select Cayman Global Allocation Fund I, Ltd. (the "Select Cayman Fund"), which was formed in the Cayman Islands and is a wholly-owned subsidiary of the Fund.The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1 and 5 years, and since inception, compare with those of a broad measure of market performance. Performance for Class A and Class N shares of the Fund reflects any applicable sales charge. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More up-to-date performance information is available at http://www.massmutual.com/funds or by calling 1-888-309-3539.0.38<b>Portfolio Turnover </b>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 3% of the average value of its portfolio.3904114551131For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds.25000<b>Principal Risks </b>87191810141806You have the potential to make money by investing in the Fund, but you can also lose money.Under normal circumstances, the Fund invests at least 80% (and, typically, substantially all) of its net assets in the equity securities of companies included within the S&amp;P 500<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> Index* ("Index"). The Index is a widely recognized, unmanaged index representative of common stocks of larger capitalized U.S. companies. As of January 31, 2013, the market capitalization range of companies included in the Index was $1.84 billion to $427.69 billion. If the securities represented in the Index were to become concentrated in any particular industry, the Fund's investments would likewise be concentrated in securities of issuers in that industry; the Index is not currently concentrated in any single industry.<br/><br/> The Fund is passively managed, which means it tries to duplicate the investment composition and performance of the Index by using computer programs and statistical procedures. The Fund's subadviser, Northern Trust Investments, Inc. ("NTI"), will buy and sell securities in response to changes in the Index. The Fund may use Index futures contracts, a type of derivative, to gain exposure to the Index in lieu of investing in cash, or to reduce its exposure to the Index while it sells the securities in its portfolio. Use of Index futures contracts by the Fund may create investment leverage. Because the Fund, unlike the Index, is subject to fees and transaction expenses, the Fund's returns are likely to be less than those of the Index. NTI expects that, under normal circumstances, the quarterly performance of the Fund, before fees and expenses, will track the performance of the Index within a 0.95 correlation coefficient.<br/><br/>* &#8220;Standard &amp; Poor&#8217;s<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup>,&#8221; &#8220;S&amp;P<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup>,&#8221; &#8220;Standard &amp; Poor&#8217;s 500,&#8221; &#8220;500,&#8221; and &#8220;S&amp;P 500<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup>&#8221; are trademarks of Standard &amp; Poor&#8217;s Financial Services LLC (&#8220;S&amp;P&#8221; or &#8220;Standard &amp; Poor&#8217;s&#8221;) and have been licensed for use by MassMutual. The Fund is not sponsored, endorsed, sold, or promoted by Standard &amp; Poor&#8217;s, and Standard &amp; Poor&#8217;s makes no representation regarding the advisability of investing in the Fund.0.05680.04920.04330.12480.12530.12430.160.04210.11870.116Except for Class N shares, the figures shown above would be the same whether you sold your shares at the end of a period or kept them. For Class N shares, you would pay the following expenses if you did not redeem your shares:<b>Annual Performance </b><br/><br/><b>Class S Shares </b>00000.05750The Fund invests primarily in equity securities of U.S. companies that the Fund&#8217;s subadviser, Harris Associates L.P. (&#8220;Harris&#8221;), believes are undervalued. Equity securities may include common stocks, preferred stocks, securities convertible into common or preferred stocks, rights, and warrants, of issuers of any size. The Fund typically invests most of its assets in equity securities of U.S. companies, but may invest in foreign securities and American Depositary Receipts (&#8220;ADRs&#8221;), including emerging market securities. The Fund generally will not invest more than 25% of its total assets in foreign securities, and will not invest more than 5% of its total assets in emerging market securities. The Fund may hold a portion of its assets in cash or cash equivalents. The Fund is non-diversified, which means that it may hold larger positions in a smaller number of stocks than a diversified fund.<br/><br/>In selecting equity investments for the Fund, Harris uses a value investment philosophy. This investment philosophy is based upon the belief that, over time, a company&#8217;s stock price converges with the company&#8217;s intrinsic or true business value. Harris seeks to identify companies that it believes have discounted stock prices compared to the companies&#8217; true business values. By &#8220;true business value,&#8221; Harris means an estimate of the price a knowledgeable buyer would pay to acquire the entire business. Harris usually sells a stock when the price approaches its estimated worth. This means that Harris sets specific &#8220;buy&#8221; and &#8220;sell&#8221; targets for each stock held by the Fund. Harris also monitors each holding and adjusts those price targets as warranted to reflect changes in a company&#8217;s fundamentals.0.02090.03410.03420.0360.01660.05950.0280.036176545000000.01The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money.<br/><br/><b>Cash Position Risk</b> The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br/><br/><b>Convertible Securities Risk</b> Convertible securities are subject to the risks of both debt securities and equity securities. The values of convertible securities tend to decline as interest rates rise and, due to the conversion feature, tend to vary with fluctuations in the market value of the underlying common or preferred stock.<br /><br/><b>Foreign Investment Risk; Emerging Markets Risk; Currency Risk</b> Foreign securities are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of the Fund&#8217;s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social instability, greater custody and operational risks, and greater volatility in currency exchange rates.<br/><br/><b>Growth Company Risk</b> The prices of growth securities are often more sensitive to market fluctuations because of their heavy dependence on future earnings expectations, and can be more volatile than the market in general.<br/><br /><b>Liquidity Risk</b> Certain securities may be difficult (or impossible) to sell or positions difficult to close out at a desirable time and price, and the Fund may be required to hold an investment that is declining in value or be prevented from realizing capital gains.<br /><br/><b>Management Risk</b> The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br /><br/><b>Market Risk</b> The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br /><br/><b>Preferred Stock Risk</b> Preferred stocks are subject to the risks associated with other types of equity securities, as well as additional risks, such as potentially greater volatility and risks related to deferral, non-cumulative dividends, subordination, liquidity, limited voting rights, and special redemption rights.<br/><br/><b>Smaller and Mid-Cap Company Risk</b> Market risk and liquidity risk are particularly pronounced for securities of smaller companies, which may trade less frequently and in smaller volumes than more widely-held securities, and may fluctuate in price more than other securities. Smaller companies may have limited product lines, markets, or financial resources and may be dependent on a limited management group; they may have been recently organized and have little or no track record of success.<br /><br/><b>Valuation Risk</b> The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.0.06280.06970.06980.07120.0710.05180.0650.07319392041<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)<b>Performance Information </b>The Fund seeks to provide investment results approximating (before fees and expenses) the aggregate price and dividend performance of the securities included in the Russell 2000<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> Index*.<br/><br/>* The Fund is not promoted, sponsored, or endorsed by, nor in any way affiliated with Russell Investment Group (&#8220;Russell&#8221;). Russell is not responsible for and has not reviewed the Fund nor any associated literature or publications and Russell makes no representation or warranty, express or implied, as to their accuracy, or completeness, or otherwise. The Russell 2000<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> Index and Russell<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> are trademarks of the Frank Russell Company.The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years (or 1 year and since inception for Class Z shares) compare with those of a broad measure of market performance (Russell 2000 Growth Index) and an additional index that provides a comparison for the Fund&#8217;s returns without regard to investment style. Performance for Class A and Class N shares of the Fund reflects any applicable sales charge. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More up-to-date performance information is available at http://www.massmutual.com/funds or by calling 1-888-309-3539.168<table style="border-collapse: collapse; font-size: 8pt;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"><tr style="font-size: 8pt;"><td valign="bottom">Highest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2Q&nbsp;&nbsp;'09,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">8.87%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">Lowest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">3Q&nbsp;&nbsp;'08,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom"></td> <td valign="bottom" align="right">-6.06%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table>527000000.0575<b>Average Annual Total Returns </b><br/>(for the periods ended December 31, 2012)The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1 and 5 years, and since inception, compare with those of a broad measure of market performance.25000910http://www.massmutual.com/fundsOther Expenses are based on estimated amounts for the current fiscal year of the Fund.1-888-309-3539After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor&#8217;s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class S only. After-tax returns for other classes will vary.You have the potential to make money by investing in the Fund, but you can also lose money.Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.0000.057500000001985<b>Annual Performance<br/><br/>Class S Shares</b>00000.01After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.0.0009After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.0.16540.18510.16350.16110.10940.16210.16120.09180.14460.1851After-tax returns are shown for Class S only. After-tax returns for other classes will vary.The Fund began operations July, 26, 2012. Because the Fund is new, there is no table which shows how the Fund&#8217;s returns have deviated from the broad market. Performance history will be available for the Fund after it has been in operation for one calendar year.Highest Quarter:-0.001-0.001-0.001-0.001-0.001-0.0012009-09-300.0010.0010.0010.0010.0010.0010.1889Lowest Quarter:000000.00252008-12-310000.05750.0410.03880.03470.040.03790.02360.03260.0379-0.2180.00250.00350.0050.0060.00750.00650.1450.17670.03970.03440.03180.03860.03690.02490.03170.044100002011-12-072011-12-072006-08-292006-08-292006-08-292006-08-292006-08-292006-08-292006-08-292006-08-290.00010.00010.00010.00010.00010.00010000.05750.00650.00650.00650.00650.00650.00360.00460.00610.00710.00860.0101-0.0012-0.0012-0.0012-0.0012-0.0012-0.00120000.00250.0050.00240.00340.00490.00590.00740.00891540.00120.00210.00360.00360.0041500<table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="left"><tr> <td valign="bottom">Highest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2Q&nbsp;&nbsp;&#8217;03,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">29.89%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">Lowest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">4Q&nbsp;&nbsp;&#8217;08,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom"></td> <td valign="bottom" align="right">-27.57%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table>8710.00770.00860.01010.01260.01561913116120135726291-0.0002-0.0002-0.0002-0.0002-0.000288981137060.48830.00750.00840.00990.01240.01540.1362375421104559110093833363040.01262864972913861016138614321601234522010.06870.1863-0.42240.5372-0.12020.2042-0.32970.031353959367313340.21830.13260.28364.17-0.03911212132814992251768897112705268For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds.0.19425000000000.0575<table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"><tr><td valign="bottom">Highest<br/>Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2Q&nbsp;&nbsp;'09,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">25.47%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">Lowest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">4Q&nbsp;&nbsp;'08,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" nowrap="nowrap">&nbsp;</td> <td valign="bottom" nowrap="nowrap" align="right">-24.72%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table>2582963249985413714565216501313940570000000102811691274220214462054You have the potential to make money by investing in the Fund, but you can also lose money.0.0090.0090.0090.0090000.0025The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1 and 5 years, and since inception, compare with those of a broad measure of market performance.0.1940.19240.12810.19150.19030.11920.16740.18050.00170.00270.00420.00421-888-309-35390.03760.0360.03190.03650.03450.02020.02810.03550.01070.01170.01320.0157http://www.massmutual.com/funds191Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.0.02240.02010.01830.02130.01960.00850.01350.02385910.00990.01090.01170.0142101622017786101694257Performance for Class A and Class N shares of the Fund reflects any applicable sales charge.2442723209504910.0010.0010.0010.0010.0010.0010.12930.12930.08410.12780.12560.10980.1459426475556122584895210591234200818550.02070.02050.01760.02020.01850.0130.0349000000.00250.08120.0730.06790.08070.07910.07320.0980.00650.00650.00650.00650.00650.0065<b>MassMutual Select Small Company Value Fund</b><b>INVESTMENT OBJECTIVE</b>The Fund seeks to achieve long-term growth of capital by investing primarily in a diversified portfolio of equity securities of smaller companies.0.00190.00290.00440.00540.00690.0059<table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="left"><tr> <td valign="bottom">Highest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">1Q&nbsp;&nbsp;&#8217;12,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">20.14%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">Lowest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">4Q&nbsp;&nbsp;&#8217;08,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">-27.26%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table><b>FEES AND EXPENSES OF THE FUND</b>00000.00250.005This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.0.00010.00010.00010.00010.00010.0001<b>Shareholder Fees</b> (fees paid directly from your investment)<b>Average Annual Total Returns</b><br/>(for the periods ended December 31, 2012)<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)<b>Example</b>This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:0.0030.0040.00550.00650.0080.00950.00090.00290.00330.00480.00480.0053<b>Average Annual Total Returns</b><br/>(for the periods ended December 31, 2012)Except for Class N shares, the figures shown above would be the same whether you sold your shares at the end of a period or kept them. For Class N shares, you would pay the following expenses if you did not redeem your shares:<b>Portfolio Turnover</b>0.0020.0030.00450.00550.0070.0085The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 34% of the average value of its portfolio.<b>INVESTMENTS, RISKS, AND PERFORMANCE</b><br/><br/><b>Principal Investment Strategies </b>The Fund invests primarily in equity securities that the subadvisers consider to be undervalued. Under normal circumstances, the Fund invests at least 80% of its net assets in the securities of companies whose market capitalizations at the time of purchase are within the market capitalization range of companies included in the Russell 2000<sup>&#174;</sup> Index or the S&amp;P SmallCap 600 Index (as of January 31, 2013, between $33 million and $5.26 billion). Equity securities may include common stocks, preferred stocks, securities convertible into common or preferred stock, rights, and warrants. The Fund typically invests most of its assets in equity securities of U.S. companies, but may invest in foreign securities and American Depositary Receipts ("ADRs"), including emerging market securities. The Fund generally will not invest more than 20% of its total assets in foreign securities. The Fund may invest in real estate investment trusts ("REITs") and exchange-traded funds. The Fund may at times invest a substantial portion of its assets in obligations of issuers in one or more market, economic, or industry sectors. The Fund may hold a portion of its assets in cash or cash equivalents.<br/><br/>The Fund is managed by three subadvisers, Federated Clover Investment Advisors ("Federated Clover"), T. Rowe Price Associates, Inc. ("T. Rowe Price"), and EARNEST Partners, LLC ("Earnest Partners"), each being responsible for a portion of the portfolio, but not necessarily equally weighted. Each subadviser employs a value-based investment approach and may perform a number of analyses in considering whether to buy or sell a security for the Fund. Each of the subadvisers uses a combination of fundamental and quantitative analyses to identify undervalued companies. A subadviser may consider selling a security for the Fund if, for example, in its judgment, the security has reached its target price, has failed to perform as expected and the security's investment thesis is no longer intact, or other opportunities appear more attractive.<b>Principal Risks</b>0.00740.00940.00980.01130.01380.0168The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money.<br/><br/><b>Cash Position Risk</b> The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br/><br/><b>Convertible Securities Risk</b> Convertible securities are subject to the risks of both debt securities and equity securities. The values of convertible securities tend to decline as interest rates rise and, due to the conversion feature, tend to vary with fluctuations in the market value of the underlying common or preferred stock.<br/><br/><b>Foreign Investment Risk; Emerging Markets Risk; Currency Risk </b>Foreign securities, including ADRs, are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of the Fund&#8217;s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social, instability, greater custody and operational risks, and greater volatility in currency exchange rates.<br/><br/><b>Liquidity Risk</b> Certain securities may be difficult (or impossible) to sell or positions difficult to close out at a desirable time and price, and the Fund may be required to hold an investment that is declining in value or be prevented from realizing capital gains.<br/><br/><b>Management Risk</b> The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br/><br/><b>Market Risk</b> The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br/><br/><b>Preferred Stock Risk</b> Preferred stocks are subject to the risks associated with other types of equity securities, as well as additional risks, such as potentially greater volatility and risks related to deferral, non-cumulative dividends, subordination, liquidity, limited voting rights, and special redemption rights.<br/><br/><b>REIT Risk </b>Investments in REITs may be subject to risks similar to those associated with direct investment in real estate, as well as additional risks associated with equity investments.<br/><br/><b>Risk of Investment in Other Funds or Pools</b> The Fund is indirectly exposed to all of the risks of the underlying funds, including exchange-traded funds, in which it invests, including the risk that the underlying funds will not perform as expected. The Fund indirectly pays a portion of the expenses incurred by the underlying funds.<br/><br/><b>Sector Risk</b> The Fund may allocate more of its assets to certain economic, market, or industry sectors than to others. This could increase the volatility of the Fund&#8217;s portfolio, and the Fund&#8217;s performance may be more susceptible to developments affecting issuers in those sectors than if the Fund invested more broadly.<br/><br/><b>Smaller and Mid-Cap Company Risk</b> Market risk and liquidity risk are particularly pronounced for securities of smaller companies, which may trade less frequently and in smaller volumes than more widely-held securities, and may fluctuate in price more than other securities. Smaller companies may have limited product lines, markets, or financial resources and may be dependent on a limited management group; they may have been recently organized and have little or no track record of success.<br/><br/><b>Valuation Risk </b>The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.<br/><br/><b>Value Company Risk</b> The value investment approach entails the risk that the market will not recognize a security&#8217;s intrinsic value for a long time, or that a stock judged to be undervalued may actually be appropriately priced.168After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.<b>Performance Information</b>541940After-tax returns are shown for Class S only. After-tax returns for other classes will vary.-0.0015-0.0015-0.0015-0.0015-0.0015-0.0015<b>Annual Performance</b><br/><br/><b>Class S Shares </b><b>Average Annual Total Returns</b><br/>(for the periods ended December 31, 2012)-0.0008-0.0008-0.0015-0.0015The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money.<br/><br/><b>Cash Position Risk</b> The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br/><br/><b>Convertible Securities Risk</b> Convertible securities are subject to the risks of both debt securities and equity securities. The values of convertible securities tend to decline as interest rates rise and, due to the conversion feature, tend to vary with fluctuations in the market value of the underlying common or preferred stock.<br/><br/><b>Foreign Investment Risk; Emerging Markets Risk; Currency Risk </b> Foreign securities, including ADRs, are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of the Fund&#8217;s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social instability, greater custody and operational risks, and greater volatility in currency exchange rates.<br/><br/><b>Liquidity Risk</b> Certain securities may be difficult (or impossible) to sell or positions difficult to close out at a desirable time and price, and the Fund may be required to hold an investment that is declining in value or be prevented from realizing capital gains.<br/><br/><b>Management Risk</b> The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br/><br/><b>Market Risk</b> The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br/><br/><b>Non-Diversification Risk </b> Because the Fund may invest its assets in a more limited number of issuers than a diversified fund, a decline in the market value of a particular security may affect the Fund&#8217;s value more than if the Fund were diversified.<br/><br/><b>Preferred Stock Risk</b> Preferred stocks are subject to the risks associated with other types of equity securities, as well as additional risks, such as potentially greater volatility and risks related to deferral, non-cumulative dividends, subordination, liquidity, limited voting rights, and special redemption rights.<br/><br/><b>Smaller and Mid-Cap Company Risk</b> Market risk and liquidity risk are particularly pronounced for securities of smaller companies, which may trade less frequently and in smaller volumes than more widely-held securities, and may fluctuate in price more than other securities. Smaller companies may have limited product lines, markets, or financial resources and may be dependent on a limited management group; they may have been recently organized and have little or no track record of success.<br/><br/><b>Valuation Risk </b> The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.<br/><br/><b>Value Company Risk</b> The value investment approach entails the risk that the market will not recognize a security&#8217;s intrinsic value for a long time, or that a stock judged to be undervalued may actually be appropriately priced.2054After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor&#8217;s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class S only. After-tax returns for other classes will vary.00000.057500.00590.00790.00830.00980.01230.0153<b>Principal Risks </b>-0.001-0.001-0.001-0.001-0.001-0.001Highest Quarter:2009-06-300.0887Lowest Quarter:2008-09-30-0.0606<b>MassMutual Select Fundamental Growth Fund </b>2006-03-312006-03-312006-03-312006-03-312006-03-312006-03-312006-03-312006-03-31<b>Shareholder Fees</b> (fees paid directly from your investment)0.11220.05840.13710.11220.10930.0440.09550.17510.16<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)<b>INVESTMENTS, RISKS, AND PERFORMANCE </b><br /><br /><b>Principal Investment Strategies </b>00000.24580.0580000.057500.036800000.010.08740.1277<table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"><tr><td valign="bottom">Highest<br/>Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">3Q&nbsp;&nbsp;'09,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">21.04%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">Lowest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">4Q&nbsp;&nbsp;'08,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" nowrap="nowrap">&nbsp;</td> <td valign="bottom" nowrap="nowrap" align="right">-24.31%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table>-0.42450.4306<b>Performance Information </b>0.16640.015The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years (or 1 year and since inception for Class Z shares) compare with those of a broad measure of market performance. Performance for Class A and Class N shares of the Fund reflects any applicable sales charge. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More up-to-date performance information is available at http://www.massmutual.com/funds or by calling 1-888-309-3539.0.1843The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years (or 1 year and since inception for Class Z shares) compare with those of a broad measure of market performance. Performance for Class A and Class N shares of the Fund reflects any applicable sales charge. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More up-to-date performance information is available at http://www.massmutual.com/funds or by calling 1-888-309-3539.0.45940.11910.00050.00050.00050.0005000000.010.03450.2028The Fund invests primarily in domestic equity securities that the Fund's subadviser, Wellington Management Company, LLP ("Wellington Management"), believes offer the potential for long-term growth. Equity securities may include common stocks, preferred stocks, securities convertible into common or preferred stock, rights, and warrants, of issuers of any size. While most assets will be invested in equity securities of U.S. companies, the Fund may also invest up to 20% of its total assets in foreign securities and American Depositary Receipts ("ADRs"), including emerging market securities. The Fund may hold a portion of its assets in cash or cash equivalents.<br/><br/>Wellington Management generally employs a bottom-up stock selection process that utilizes fundamental analysis to identify specific securities within industries or sectors for purchase or sale. Wellington Management seeks to identify diversified sources of return based on its assessment of individual companies against the context of broader market factors by evaluating and ranking each stock on a consistent set of growth, quality, and valuation criteria.<br/><br/> In pursuing its investment objective, Wellington Management has the discretion to purchase some securities that do not meet its normal investment criteria, as described above, when it believes there is an opportunity for substantial appreciation (such as, for example, Wellington Management believes a security could increase in value as a result of a change in management, an extraordinary corporate event, a new product introduction or innovation, or a favorable competitive development). The Fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.0000.00250.0207The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money.<br /><br /><b>Cash Position Risk </b>The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br /><br /><b>Convertible Securities Risk </b>Convertible securities are subject to the risks of both debt securities and equity securities. The values of convertible securities tend to decline as interest rates rise and, due to the conversion feature, tend to vary with fluctuations in the market value of the underlying common or preferred stock.<br /><br /><b>Foreign Investment Risk; Emerging Markets Risk; Currency Risk </b>Foreign securities, including ADRs, are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of the Fund&#8217;s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social instability, greater custody and operational risks, and greater volatility in currency exchange rates.<br /><br /><b>Growth Company Risk </b>The prices of growth securities are often more sensitive to market fluctuations because of their heavy dependence on future earnings expectations, and can be more volatile than the market in general.<br /><br /><b>Liquidity Risk </b>Certain securities may be difficult (or impossible) to sell or positions difficult to close out at a desirable time and price, and the Fund may be required to hold an investment that is declining in value or be prevented from realizing capital gains.<br /><br /><b>Management Risk </b>The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br /><br /><b>Market Risk </b>The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br /><br /><b>Preferred Stock Risk </b>Preferred stocks are subject to the risks associated with other types of equity securities, as well as additional risks, such as potentially greater volatility and risks related to deferral, non-cumulative dividends, subordination, liquidity, limited voting rights, and special redemption rights.<br /><br /><b>Smaller and Mid-Cap Company Risk </b>Market risk and liquidity risk are particularly pronounced for securities of smaller companies, which may trade less frequently and in smaller volumes than more widely-held securities, and may fluctuate in price more than other securities. Smaller companies may have limited product lines, markets, or financial resources and may be dependent on a limited management group; they may have been recently organized and have little or no track record of success.<br /><br /><b>Valuation Risk </b>The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.<b>Performance Information</b>March 31, 20140.0050.0050.0050.0050.005-0.4282<b>Annual Performance</b><br /><br /><b>Class S Shares </b><table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="left"><tr> <td valign="bottom">Highest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2Q&nbsp;&nbsp;&#8217;09,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">19.30%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">Lowest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">4Q&nbsp;&nbsp;&#8217;08,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">-24.08%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table>0.34<div style="display:none">~ http://www.massmutual.com/role/ScheduleShareholderFeesMassMutualSelectStrategicBondFund column period compact * ~</div>
0.6320000.00250.005<b>Average Annual Total Returns</b><br />(for the periods ended December 31, 2012)For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds.0.2181101111119711250000.00090.00190.0030.00340.004-0.0023March 31, 2014The Fund seeks to provide investment results approximating (before fees and expenses) the aggregate price and dividend performance of the securities included in the MSCI EAFE<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> Index*. <br/><br/>* The Fund is not sponsored, endorsed, sold, or promoted by MSCI Inc. (&#8220;MSCI&#8221;), any of its affiliates, any of its information providers, or any other third party involved in, or related to, compiling, computing, or creating any MSCI index (collectively, the &#8220;MSCI Parties&#8221;). The MSCI indexes are the exclusive property of MSCI. MSCI and the MSCI index names are service mark(s) of MSCI or its affiliates and have been licensed for use for certain purposes by MassMutual. None of the MSCI Parties makes any representation or warranty, express or implied, to the issuer or owners of the Fund or any other person or entity regarding the advisability of investing in funds generally or in the Fund particularly or the ability of any MSCI index to track corresponding stock market performance.Because Total Annual Fund Operating Expenses include Acquired Fund fees and expenses, they may not correspond to the ratios of expenses to average daily net assets shown in the &#8220;Financial Highlights&#8221; tables in the Prospectus, which reflect the operating expenses of the Fund and do not include Acquired Fund fees and expenses.33236440410281.09For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds.0.00010.00010.00010.00010.00010.18430.18380.12040.18230.18070.11070.16580.15260.16You have the potential to make money by investing in the Fund, but you can also lose money.1.040.0010.00140.00220.00225826367091368The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years (or 1 year and since inception for Class Z shares) compare with those of a broad measure of market performance (Russell 2000 Value Index) and an additional index that provides a comparison for the Fund&#8217;s returns without regard to investment style.0.0060.0070.00810.0110.01410.2117Management Fees have been restated to reflect current fees.12981413157723230.02910.02890.02490.02840.02690.01250.02140.03120.01661-888-309-35390.3832http://www.massmutual.com/funds0.1798You have the potential to make money by investing in the Fund, but you can also lose money.The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money. Except as otherwise stated, references in this section to &#8220;the Fund&#8221; or &#8220;a Fund&#8221; may relate to the Fund, one or more Underlying Funds, or both.<br/><br/><b>Bank Loans Risk </b>Bank loans in which the Fund may invest have similar risks to lower-rated fixed income securities. Changes in the financial condition of the borrower or economic conditions or other circumstances may reduce the capacity of the borrower to make principal and interest payments on such instruments and may lead to defaults. Senior secured bank loans are supported by collateral; however the value of the collateral may be insufficient to cover the amount owed to the Fund. If the Fund relies on a third party to administer a loan, the Fund is subject to the risk that the third party will fail to perform its obligations. In addition, if the Fund holds only a participation interest in a loan made by a third party, the Fund&#8217;s receipt of payments on the loan will be dependent on the third party&#8217;s willingness and ability to make those payments to the Fund.<br/><br/><b>Cash Position Risk </b>The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br/><br/><b>Commodities-Related Investments Risk </b>The Fund&#8217;s investments in commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of commodities may be affected by overall market movements, commodity index volatility, changes in interest rates, or factors affecting a particular industry or commodity.<br/><br/><b>Convertible Securities Risk </b>Convertible securities are subject to the risks of both debt securities and equity securities. The values of convertible securities tend to decline as interest rates rise and, due to the conversion feature, tend to vary with fluctuations in the market value of the underlying common or preferred stock.<br/><br/><b>Credit Risk </b>The Fund is subject to the risk that the issuer of an investment held by the Fund or the counterparty to a transaction entered into by the Fund will be unable or unwilling to honor its obligations.<br/><br/><b>Derivatives Risk </b>Derivatives involve risks different from, and potentially greater than, direct investments, including risks of imperfect correlation between the value of derivatives and underlying assets, counterparty default, potential losses that partially or completely offset gains, and illiquidity. Derivatives can create investment leverage and be highly volatile. Derivatives may result in losses greater than the amount invested. If the value of a derivative does not correlate well with the particular market or asset class the derivative is designed to provide exposure to, the derivative may not have the effect anticipated. Many derivatives are traded in the over-the-counter market and not on exchanges.<br/><br/><b>Dollar Roll and Reverse Repurchase Agreement Transaction Risk </b>These transactions generally create leverage and subject the Fund to the credit risk of the counterparty.<br/><br/><b>Fixed Income Securities Risk </b>The values of fixed income securities typically will decline during periods of rising interest rates, and can also decline in response to changes in the financial condition of the issuer, borrower, counterparty, or underlying collateral assets, or changes in market, economic, industry, political, and regulatory conditions affecting a particular type of security or issuer or fixed income securities generally. Fixed income securities are subject to interest rate risk (the risk that the value of a fixed income security will fall when interest rates rise), extension risk (the risk that the average life of a security will be extended through a slowing of principal payments), prepayment risk (the risk that a security will be prepaid and the Fund will be required to reinvest at a less favorable rate), and credit risk.<br/><br/><b>Foreign Investment Risk; Emerging Markets Risk; Currency Risk </b>Foreign securities, including ADRs, are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of the Fund&#8217;s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social instability, greater custody and operational risks, and greater volatility in currency exchange rates.<br/><br/><b>Growth Company Risk </b>The prices of growth securities are often more sensitive to market fluctuations because of their heavy dependence on future earnings expectations, and can be more volatile than the market in general.<br/><br/><b>Inflation Risk </b>The value of assets or income from the Fund&#8217;s investments will be less in the future as inflation decreases the value of money. As inflation increases, the value of the Fund&#8217;s assets can decline as can the value of the Fund&#8217;s distributions.<br/><br/><b>Liquidity Risk </b>Certain securities may be difficult (or impossible) to sell or positions difficult to close out at a desirable time and price, and the Fund may be required to hold an investment that is declining in value or be prevented from realizing capital gains.<br/><br/><b>Lower-Rated Fixed Income Securities Risk </b>Lower-rated securities, commonly known as &#8220;junk&#8221; or &#8220;high yield&#8221; bonds, have speculative characteristics and involve greater volatility of price and yield, greater risk of loss of principal and interest, and generally reflect a greater possibility of an adverse change in financial condition that could affect an issuer&#8217;s ability to honor its obligations.<br/><br/><b>Management Risk </b>The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br/><br/><b>Market Risk </b>The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br/><br/><b>Mortgage- and Asset-Backed Securities Risk </b>Investments in mortgage- and asset-backed securities subject the Fund to credit risk, interest rate risk, extension risk, and prepayment risk, among other risks. Mortgage-backed and asset-backed securities not issued by a government agency generally involve greater credit risk than securities issued by government agencies. The types of mortgages (for example, residential or commercial mortgages) underlying securities held by the Fund may differ and be affected differently by market factors. Investments that receive only the interest portion or the principal portion of payments on the underlying assets may be more volatile than other investments. The market for mortgage- and asset-backed securities has recently experienced high volatility and a lack of liquidity. As a result, the value of many of these securities has significantly declined.<br/><br/><b>Preferred Stock Risk </b>Preferred stocks are subject to the risks associated with other types of equity securities, as well as additional risks, such as potentially greater volatility and risks related to deferral, non-cumulative dividends, subordination, liquidity, limited voting rights, and special redemption rights.<br/><br/><b>REIT Risk </b>Investments in REITs may be subject to risks similar to those associated with direct investment in real estate, as well as additional risks associated with equity investments.<br/><br/><b>Repurchase Agreement Risk </b>These transactions must be fully collateralized at all times, but involve some risk to a Fund if the other party should default on its obligation and the Fund is delayed or prevented from recovering the collateral.<br/><br/><b>Risk of Investment in Other Funds or Pools </b>The Fund is indirectly exposed to all of the risks of the Underlying Funds, including exchange-traded funds, in which it invests, including the risk that the Underlying Funds will not perform as expected. The Fund indirectly pays a portion of the expenses incurred by the Underlying Funds.<br/><br/><b>Smaller and Mid-Cap Company Risk </b>Market risk and liquidity risk are particularly pronounced for securities of smaller companies, which may trade less frequently and in smaller volumes than more widely-held securities, and may fluctuate in price more than other securities. Smaller companies may have limited product lines, markets, or financial resources and may be dependent on a limited management group; they may have been recently organized and have little or no track record of success.<br/><br/><b>U.S. Government Securities Risk </b>Obligations of certain U.S. government agencies and instrumentalities are not backed by the full faith and credit of the U.S. government, and there can be no assurance that the U.S. government would provide financial support to such agencies and instrumentalities.<br/><br/><b>Valuation Risk </b>The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.<br/><br/><b>Value Company Risk </b>The value investment approach entails the risk that the market will not recognize a security&#8217;s intrinsic value for a long time, or that a stock judged to be undervalued may actually be appropriately priced.<br/><br/><b>When-Issued, Delayed Delivery, TBA, and Forward Commitment Transaction Risk </b>These transactions may create leverage and involve a risk of loss if the value of the securities declines prior to settlement.Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.0.06820.06780.06010.06710.06560.0570.060.07520.0710.13170.07551-888-309-3539<b>INVESTMENT OBJECTIVE </b>http://www.massmutual.com/funds0.16320.0070.00740.00820.0107Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.The Fund seeks to achieve as high a total rate of return on an annual basis as is considered consistent with prudent investment risk and the preservation of capital.-0.41<b>FEES AND EXPENSES OF THE FUND </b>0.45After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 107 of the Fund&#8217;s Prospectus or from your financial professional.0.2803After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.<div style="display:none">~ http://www.massmutual.com/role/ScheduleAnnualFundOperatingExpensesMassMutualSelectStrategicBondFund column period compact * ~</div>
-0.0091-0.021-0.0087-0.0098-0.0115-0.0255-0.01690.00590.0166After-tax returns are shown for Class S only. After-tax returns for other classes will vary.<b>Performance Information </b>-0.0186Performance for Class A and Class N shares of the Fund reflects any applicable sales charge.0.1451After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.0.06260.05460.05450.06160.05990.05110.05420.07380.071Highest Quarter:After-tax returns are shown for Class S only. After-tax returns for other classes will vary.2009-09-300.2104For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds.<div style="display:none">~ http://www.massmutual.com/role/ScheduleExpenseExampleTransposedMassMutualSelectStrategicBondFund column period compact * ~</div>
Lowest Quarter:2008-12-310.00550.00550.00550.0055-0.2431<b>Example </b><div style="display:none">~ http://www.massmutual.com/role/ScheduleExpenseExampleNoRedemptionTransposedMassMutualSelectStrategicBondFund column period compact * ~</div>
This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:<b>Portfolio Turnover </b>Highest Quarter:The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 57% of the average value of its portfolio.2009-06-30<div style="display:none">~ http://www.massmutual.com/role/ScheduleAnnualTotalReturnsMassMutualSelectStrategicBondFundBarChart column period compact * ~</div>
0.193Lowest Quarter:2008-12-31-0.2408<b>Example </b><div style="display:none">~ http://www.massmutual.com/role/ScheduleAverageAnnualTotalReturnsTransposedMassMutualSelectStrategicBondFund column period compact * ~</div>
This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:0.3937<b>Portfolio Turnover </b>0.2286The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. For the period July 25, 2012 (commencement of operations) through December 31, 2012, the Fund&#8217;s portfolio turnover rate was 6% of the average value of its portfolio.250000.05010.1497The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money.<br /><br /> <b>Cash Position Risk</b> The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br /><br /> <b>Credit Risk</b> The Fund is subject to the risk that the issuer of an investment held by the Fund or the counterparty to a transaction entered into by the Fund will be unable or unwilling to honor its obligations.<br /><br /> <b>Derivatives Risk </b> Derivatives involve risks different from, and potentially greater than, direct investments, including risks of imperfect correlation between the value of derivatives and underlying assets, counterparty default, potential losses that partially or completely offset gains, and illiquidity. Derivatives can create investment leverage and be highly volatile. Derivatives may result in losses greater than the amount invested. If the value of a derivative does not correlate well with the particular market or asset class the derivative is designed to provide exposure to, the derivative may not have the effect anticipated. Many derivatives are traded in the over-the-counter market and not on exchanges.<br /><br /> <b>Indexing Risk</b> The Fund&#8217;s performance may not track the performance of the index exactly due to a number of factors, including fees and expenses of the Fund, and the Fund&#8217;s cash positions.<br /><br /> <b>Industry Concentration Risk</b> The Fund may concentrate its assets in a particular industry or group of industries. This could increase the volatility of the Fund&#8217;s portfolio, and the Fund&#8217;s performance may be more susceptible to developments affecting issuers in that industry or group of industries than if the Fund invested more broadly.<br /><br /> <b>Management Risk</b> The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br /><br /> <b>Market Risk</b> The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br /><br /> <b>Valuation Risk</b> The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.-0.0168-0.2765<b>Annual Performance </b><br/><br/><b>Class A Shares </b>0.27456081851006932560.2325-0.0251221285297344973515<b>INVESTMENTS, RISKS, AND PERFORMANCE </b><br/><br/><b>Principal Investment Strategies </b><div style="display:none">~ http://www.massmutual.com/role/ScheduleShareholderFeesMassMutualSelectGrowthOpportunitiesFund column period compact * ~</div>
0.1477397505527608127389961728368124490411411188136121251975<b>Average Annual Total Returns </b><br/>(for the periods ended December 31, 2012)<div style="display:none">~ http://www.massmutual.com/role/ScheduleAnnualFundOperatingExpensesMassMutualSelectGrowthOpportunitiesFund column period compact * ~</div>
1922242599054463353904501146771The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money.<br/><br/> <b>Bank Loans Risk</b> Bank loans in which the Fund may invest have similar risks to lower-rated fixed income securities. Changes in the financial condition of the borrower or economic conditions or other circumstances may reduce the capacity of the borrower to make principal and interest payments on such instruments and may lead to defaults. Senior secured bank loans are supported by collateral; however the value of the collateral may be insufficient to cover the amount owed to the Fund. If the Fund relies on a third party to administer a loan, the Fund is subject to the risk that the third party will fail to perform its obligations. In addition, if the Fund holds only a participation interest in a loan made by a third party, the Fund&#8217;s receipt of payments on the loan will be dependent on the third party&#8217;s willingness and ability to make those payments to the Fund.<br/><br/> <b>Cash Position Risk </b>The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br/><br/> <b>Commodities-Related Investments Risk</b> The Fund&#8217;s investments in commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of commodities may be affected by overall market movements, commodity index volatility, changes in interest rates, or factors affecting a particular industry or commodity. The Fund&#8217;s investments in commodities and commodity-related instruments may bear on or be limited by the Fund&#8217;s intention to qualify as a &#8220;regulated investment company&#8221; for U.S. federal income tax purposes.<br/><br/> <b>Convertible Securities Risk</b> Convertible securities are subject to the risks of both debt securities and equity securities. The values of convertible securities tend to decline as interest rates rise and, due to the conversion feature, tend to vary with fluctuations in the market value of the underlying common or preferred stock.<br/><br/> <b>Credit Risk</b> The Fund is subject to the risk that the issuer of an investment held by the Fund or the counterparty to a transaction entered into by the Fund will be unable or unwilling to honor its obligations.<br/><br/> <b>Derivatives Risk </b>Derivatives involve risks different from, and potentially greater than, direct investments, including risks of imperfect correlation between the value of derivatives and underlying assets, counterparty default, potential losses that partially or completely offset gains, and illiquidity. Derivatives can create investment leverage and be highly volatile. Derivatives may result in losses greater than the amount invested. If the value of a derivative does not correlate well with the particular market or asset class the derivative is designed to provide exposure to, the derivative may not have the effect anticipated. Many derivatives are traded in the over-the-counter market and not on exchanges.<br/><br/> <b>Fixed Income Securities Risk </b>The values of fixed income securities typically will decline during periods of rising interest rates, and can also decline in response to changes in the financial condition of the issuer, borrower, counterparty, or underlying collateral assets, or changes in market, economic, industry, political, and regulatory conditions affecting a particular type of security or issuer or fixed income securities generally. Fixed income securities are subject to interest rate risk (the risk that the value of a fixed income security will fall when interest rates rise), extension risk (the risk that the average life of a security will be extended through a slowing of principal payments), prepayment risk (the risk that a security will be prepaid and the Fund will be required to reinvest at a less favorable rate), and credit risk.<br/><br/> <b>Foreign Investment Risk; Emerging Markets Risk; Currency Risk </b>Foreign securities are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of the Fund&#8217;s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social instability, greater custody and operational risks, and greater volatility in currency exchange rates.<br/><br/> <b>Growth Company Risk </b>The prices of growth securities are often more sensitive to market fluctuations because of their heavy dependence on future earnings expectations, and can be more volatile than the market in general.<br/><br/> <b>Leveraging Risk </b>Instruments and transactions, including derivatives, that create leverage may cause the value of an investment in the Fund to be more volatile and all other risks will tend to be compounded.<br/><br/> <b>Liquidity Risk</b> Certain securities may be difficult (or impossible) to sell or positions difficult to close out at a desirable time and price, and the Fund may be required to hold an investment that is declining in value or be prevented from realizing capital gains.<br/><br/> <b>Lower-Rated Fixed Income Securities Risk</b> Lower-rated securities, commonly known as &#8220;junk&#8221; or &#8220;high yield&#8221; bonds, have speculative characteristics and involve greater volatility of price and yield, greater risk of loss of principal and interest, and generally reflect a greater possibility of an adverse change in financial condition that could affect an issuer&#8217;s ability to honor its obligations. <br/><br/> <b>Management Risk</b> The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br/><br/> <b>Market Risk</b> The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br/><br/> <b>Mortgage- and Asset-Backed Securities Risk </b>Investments in mortgage- and asset-backed securities subject the Fund to credit risk, interest rate risk, extension risk, and prepayment risk, among other risks. Mortgage-backed and asset-backed securities not issued by a government agency generally involve greater credit risk than securities issued by government agencies. The types of mortgages (for example, residential or commercial mortgages) underlying securities held by the Fund may differ and be affected differently by market factors. Investments that receive only the interest portion or the principal portion of payments on the underlying assets may be more volatile than other investments. The market for mortgage- and asset-backed securities has recently experienced high volatility and a lack of liquidity. As a result, the value of many of these securities has significantly declined.<br/><br/> <b>Preferred Stock Risk</b> Preferred stocks are subject to the risks associated with other types of equity securities, as well as additional risks, such as potentially greater volatility and risks related to deferral, non-cumulative dividends, subordination, liquidity, limited voting rights, and special redemption rights.<br/><br/> <b>REIT Risk </b>Investments in REITs may be subject to risks similar to those associated with direct investment in real estate, as well as additional risks associated with equity investments.<br/><br/> <b>Select Cayman Fund Risk</b> The Fund&#8217;s investments in the Select Cayman Fund expose the Fund to the risks associated with that entity&#8217;s investments, which are generally the risks of commodities-related investments. The Select Cayman Fund is not subject to the investor protections of the Investment Company Act of 1940, as amended (the &#8220;1940 Act&#8221;). Changes in U.S. or Cayman laws could result in increased expense or the inability of the Fund to operate as intended, which could adversely affect the investment returns of the Fund.<br/><br/> <b>Short Sales Risk</b> If the Fund sells a security short, it will make money if the security&#8217;s price goes down (in an amount greater than any transaction costs) and will lose money if the security&#8217;s price goes up. There is no limit on the amount of money the Fund may lose on a short sale. The Fund may not be able to close out a short sale when it might wish to do so, or may only do so at an unfavorable price.<br/><br/> <b>Smaller and Mid-Cap Company Risk</b> Market risk and liquidity risk are particularly pronounced for securities of smaller companies, which may trade less frequently and in smaller volumes than more widely-held securities, and may fluctuate in price more than other securities. Smaller companies may have limited product lines, markets, or financial resources and may be dependent on a limited management group; they may have been recently organized and have little or no track record of success.<br/><br/> <b>U.S. Government Securities Risk</b> Obligations of certain U.S. government agencies and instrumentalities are not backed by the full faith and credit of the U.S. government, and there can be no assurance that the U.S. government would provide financial support to such agencies and instrumentalities.<br/><br/> <b>Valuation Risk </b>The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.<br/><br/> <b>Value Company Risk</b> The value investment approach entails the risk that the market will not recognize a security&#8217;s intrinsic value for a long time, or that a stock judged to be undervalued may actually be appropriately priced.<b>Performance Information </b>750871100218381691The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1 year, and since inception, compare with those of a broad measure of market performance (Financial Times Stock Exchange (FTSE) World Index) and additional indexes, including an index that provides a comparison relevant to the Fund&#8217;s fixed income investments and a hypothetical custom index which comprises the S&amp;P 500, FTSE World (ex-U.S.), BofA Merrill Lynch Current 5-Year U.S. Treasury, and Citigroup Non-USD World Government Bond Indexes. Performance for Class A shares of the Fund reflects any applicable sales charge. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More up-to-date performance information is available at http://www.massmutual.com/funds or by calling 1-888-309-3539.Under normal circumstances, the Fund invests at least 80% (and, typically, substantially all) of its net assets in the equity securities of companies included in the MSCI EAFE Index (&#8220;Index&#8221;), in weightings that approximate the relative composition of the securities contained in the Index, and in MSCI EAFE Index futures contracts. The Index is a widely recognized, unmanaged index representative of equity securities in developed markets, excluding the U.S. and Canada. As of January 31, 2013, the market capitalization range of companies included in the Index was $1.38 billion to $229.35 billion, and the Index consisted of the following 22 developed market country indices: Australia, Austria, Belgium, Denmark, Finland, France, Germany, Greece, Hong Kong, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, and the United Kingdom. If the securities represented in the Index were to become concentrated in any particular industry, the Fund&#8217;s investments would likewise be concentrated in securities of issuers in that industry; the Index is not currently concentrated in any single industry.<br/><br/>The Fund is passively managed, which means it tries to duplicate the investment composition and performance of the Index by using computer programs and statistical procedures. The Fund&#8217;s subadviser, Northern Trust Investments, Inc. (&#8220;NTI&#8221;), will buy and sell securities in response to changes in the Index. The Fund may use Index futures contracts, a type of derivative, to gain exposure to the Index in lieu of investing in cash, or to reduce its exposure to the Index while it sells the securities in its portfolio. Use of Index futures contracts by the Fund may create investment leverage. Because the Fund, unlike the Index, is subject to fees and transaction expenses, the Fund&#8217;s returns are likely to be less than those of the Index.<br/><br/>Because the proportion of assets allocated to each country will approximate the relative country weights in the Index, more than 25% of the Fund&#8217;s assets may be invested in a single country (such as the United Kingdom and Japan). This may make the Fund&#8217;s performance more dependent upon the performance of a single country than if the Fund allocated its assets among issuers in a larger number of countries.<br/><br/>NTI expects that, under normal circumstances, the quarterly performance of the Fund, before fees and expenses, will track the performance of the Index within a 0.95 correlation coefficient.0.02480.01520.02040.09140.09210.09010.04210.160.11870.0778The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money. Except as otherwise stated, references in this section to &#8220;the Fund&#8221; or &#8220;a Fund&#8221; may relate to the Fund, one or more Underlying Funds, or both.<br/><br/><b>Bank Loans Risk</b> Bank loans in which the Fund may invest have similar risks to lower-rated fixed income securities. Changes in the financial condition of the borrower or economic conditions or other circumstances may reduce the capacity of the borrower to make principal and interest payments on such instruments and may lead to defaults. Senior secured bank loans are supported by collateral; however the value of the collateral may be insufficient to cover the amount owed to the Fund. If the Fund relies on a third party to administer a loan, the Fund is subject to the risk that the third party will fail to perform its obligations. In addition, if the Fund holds only a participation interest in a loan made by a third party, the Fund&#8217;s receipt of payments on the loan will be dependent on the third party&#8217;s willingness and ability to make those payments to the Fund.<br/><br/><b>Cash Position Risk</b> The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br/><br/><b>Commodities-Related Investments Risk </b>The Fund&#8217;s investments in commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of commodities may be affected by overall market movements, commodity index volatility, changes in interest rates, or factors affecting a particular industry or commodity.<br/><br/><b>Convertible Securities Risk</b> Convertible securities are subject to the risks of both debt securities and equity securities. The values of convertible securities tend to decline as interest rates rise and, due to the conversion feature, tend to vary with fluctuations in the market value of the underlying common or preferred stock.<br/><br/><b>Credit Risk</b> The Fund is subject to the risk that the issuer of an investment held by the Fund or the counterparty to a transaction entered into by the Fund will be unable or unwilling to honor its obligations.<br/><br/><b>Derivatives Risk</b> Derivatives involve risks different from, and potentially greater than, direct investments, including risks of imperfect correlation between the value of derivatives and underlying assets, counterparty default, potential losses that partially or completely offset gains, and illiquidity. Derivatives can create investment leverage and be highly volatile. Derivatives may result in losses greater than the amount invested. If the value of a derivative does not correlate well with the particular market or asset class the derivative is designed to provide exposure to, the derivative may not have the effect anticipated. Many derivatives are traded in the over-the-counter market and not on exchanges.<br/><br/><b>Dollar Roll and Reverse Repurchase Agreement Transaction Risk</b> These transactions generally create leverage and subject the Fund to the credit risk of the counterparty.<br/><br/><b>Fixed Income Securities Risk </b>The values of fixed income securities typically will decline during periods of rising interest rates, and can also decline in response to changes in the financial condition of the issuer, borrower, counterparty, or underlying collateral assets, or changes in market, economic, industry, political, and regulatory conditions affecting a particular type of security or issuer or fixed income securities generally. Fixed income securities are subject to interest rate risk (the risk that the value of a fixed income security will fall when interest rates rise), extension risk (the risk that the average life of a security will be extended through a slowing of principal payments), prepayment risk (the risk that a security will be prepaid and the Fund will be required to reinvest at a less favorable rate), and credit risk.<br/><br/><b>Foreign Investment Risk; Emerging Markets Risk; Currency Risk</b> Foreign securities, including ADRs, are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of the Fund&#8217;s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social instability, greater custody and operational risks, and greater volatility in currency exchange rates.<br/><br/><b>Growth Company Risk</b> The prices of growth securities are often more sensitive to market fluctuations because of their heavy dependence on future earnings expectations, and can be more volatile than the market in general.<br/><br/><b>Inflation Risk </b>The value of assets or income from the Fund&#8217;s investments will be less in the future as inflation decreases the value of money. As inflation increases, the value of the Fund&#8217;s assets can decline as can the value of the Fund&#8217;s distributions.<br/><br/><b>Liquidity Risk</b> Certain securities may be difficult (or impossible) to sell or positions difficult to close out at a desirable time and price, and the Fund may be required to hold an investment that is declining in value or be prevented from realizing capital gains.<br/><br/><b>Lower-Rated Fixed Income Securities Risk</b> Lower-rated securities, commonly known as &#8220;junk&#8221; or &#8220;high yield&#8221; bonds, have speculative characteristics and involve greater volatility of price and yield, greater risk of loss of principal and interest, and generally reflect a greater possibility of an adverse change in financial condition that could affect an issuer&#8217;s ability to honor its obligations.<br/><br/><b>Management Risk</b> The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br/><br/><b>Market Risk</b> The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br/><br/><b>Mortgage- and Asset-Backed Securities Risk </b>Investments in mortgage- and asset-backed securities subject the Fund to credit risk, interest rate risk, extension risk, and prepayment risk, among other risks. Mortgage-backed and asset-backed securities not issued by a government agency generally involve greater credit risk than securities issued by government agencies. The types of mortgages (for example, residential or commercial mortgages) underlying securities held by the Fund may differ and be affected differently by market factors. Investments that receive only the interest portion or the principal portion of payments on the underlying assets may be more volatile than other investments. The market for mortgage- and asset-backed securities has recently experienced high volatility and a lack of liquidity. As a result, the value of many of these securities has significantly declined.<br/><br/><b>Preferred Stock Risk</b> Preferred stocks are subject to the risks associated with other types of equity securities, as well as additional risks, such as potentially greater volatility and risks related to deferral, non-cumulative dividends, subordination, liquidity, limited voting rights, and special redemption rights.<br/><br/><b>REIT Risk</b> Investments in REITs may be subject to risks similar to those associated with direct investment in real estate, as well as additional risks associated with equity investments.<br/><br/><b>Repurchase Agreement Risk</b> These transactions must be fully collateralized at all times, but involve some risk to a Fund if the other party should default on its obligation and the Fund is delayed or prevented from recovering the collateral.<br/><br/><b>Risk of Investment in Other Funds or Pools</b> The Fund is indirectly exposed to all of the risks of the Underlying Funds, including exchange-traded funds, in which it invests, including the risk that the Underlying Funds will not perform as expected. The Fund indirectly pays a portion of the expenses incurred by the Underlying Funds.<br/><br/><b>Smaller and Mid-Cap Company Risk </b>Market risk and liquidity risk are particularly pronounced for securities of smaller companies, which may trade less frequently and in smaller volumes than more widely-held securities, and may fluctuate in price more than other securities. Smaller companies may have limited product lines, markets, or financial resources and may be dependent on a limited management group; they may have been recently organized and have little or no track record of success.<br/><br/><b>U.S. Government Securities Risk</b> Obligations of certain U.S. government agencies and instrumentalities are not backed by the full faith and credit of the U.S. government, and there can be no assurance that the U.S. government would provide financial support to such agencies and instrumentalities.<br/><br/><b>Valuation Risk</b> The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.<br/><br/><b>Value Company Risk</b> The value investment approach entails the risk that the market will not recognize a security&#8217;s intrinsic value for a long time, or that a stock judged to be undervalued may actually be appropriately priced.<br/><br/><b>When-Issued, Delayed Delivery, TBA, and Forward Commitment Transaction Risk </b>These transactions may create leverage and involve a risk of loss if the value of the securities declines prior to settlement.0.03470.04820.04810.04980.05950.01660.0280.049<b>Annual Performance</b><br/><br/><b>Class S Shares</b><b>Principal Risks </b>0.08860.00730.00730.00730.00730.00730.0073-0.52570.0520.05880.05880.06030.05180.0710.0650.06290.4070.0539-0.1684<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)0.1729<b>Shareholder Fees</b> (fees paid directly from your investment)185589The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund&#8217;s performance from year to year for Class A shares. The returns in the bar chart do not reflect the deduction of any applicable Class A sales charge. If these charges were reflected, returns would be lower than those shown. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance (S&amp;P 500<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> Index) and additional indexes, including an index that provides a comparison relevant to the Fund&#8217;s allocation to fixed income investments, an index of funds with similar investment objectives, and a hypothetical custom index which comprises the MSCI<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> EAFE<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup>, Dow Jones Wilshire 5000 (full cap), and Barclays U.S. Aggregate Bond Indexes. Average annual total returns for Class A shares of the Fund reflect any applicable sales charge. Performance for shares of the Fund for periods prior to the Fund&#8217;s inception date (06/20/11) is based on the performance of a predecessor MassMutual separate investment account with substantially the same investment objective, policies, and investment strategies as those of the Fund (the &#8220;Predecessor Account&#8221;); in the case of Class A shares of the Fund, the average annual returns have been adjusted to reflect the deduction of any applicable Class A sales charge. As a mutual fund registered under the Investment Company Act of 1940, as amended (the &#8220;1940 Act&#8221;), the Fund is subject to certain requirements and restrictions under the 1940 Act and the Internal Revenue Code of 1986, as amended (the &#8220;Code&#8221;), to which the Predecessor Account was not subject. If the Predecessor Account had been subject to those requirements and restrictions, it might have achieved less favorable investment performance. Because of the difference in tax treatments of the Predecessor Account and the Fund, after-tax performance information is not presented for the five-year or ten-year periods. Past performance is not necessarily an indication of how the Fund will perform in the future. More up-to-date performance information is available at http://www.massmutual.com/funds or by calling 1-888-309-3539.101922160000.0575After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor&#8217;s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class A only. After-tax returns for other classes will vary.0000<div style="display:none">~ http://www.massmutual.com/role/ScheduleExpenseExampleTransposedMassMutualSelectGrowthOpportunitiesFund column period compact * ~</div>
Performance for Class A and Class N shares of the Fund reflects any applicable sales charge.1440.17290.17040.12170.17120.16610.10090.1769<b>Annual Performance</b><br/><br/><b>Class S Shares</b>The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance.446771-0.0726-0.0737-0.0587-0.0742-0.0753-0.088-0.04341691-0.046-0.0485-0.0373-0.0475-0.0486-0.0598-0.024500000.0050.0025911101141297212850.6066<b>INVESTMENT OBJECTIVE </b>3013613734201044589This Fund seeks growth of capital over the long term.0.0225<b>FEES AND EXPENSES OF THE FUND </b><table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"><tr><td valign="bottom">Highest<br/>Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">3Q&nbsp;&nbsp;'09,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">27.48%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">Lowest<br/>Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">4Q&nbsp;&nbsp;'08,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" nowrap="nowrap">&nbsp;</td> <td valign="bottom" nowrap="nowrap" align="right">-26.95%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table>52963165273213891019This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.-0.0067<b>Shareholder Fees</b> (fees paid directly from your investment)0.1544<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)1182140214471617236022160.046<b>Portfolio Turnover </b><b>Performance Information </b>-0.4307The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 20% of the average value of its portfolio.0.314The Fund began operations July 25, 2012. Because the Fund is new, there is no table which shows how the Fund&#8217;s returns have deviated from the broad market. Performance history will be available for the Fund after it has been in operation for one calendar year.<b>Example </b>1560.3364This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:-0.019<b>INVESTMENTS, RISKS, AND PERFORMANCE </b><br/><br/><b>Principal Investment Strategies </b>Under normal circumstances, the Fund invests at least 80% of net assets in the common stocks of large- and medium-sized blue chip growth companies. The Fund's subadviser, T. Rowe Price Associates, Inc. ("T. Rowe Price"), currently defines blue chip growth companies to mean firms that, in its view, are well-established in their industries and have the potential for above-average earnings growth. Equity securities may include common stocks, preferred stocks, securities convertible into common or preferred stock, rights, and warrants. While most assets will be invested in equity securities of U.S. companies, the Fund may also invest up to 20% of its total assets in foreign securities and American Depositary Receipts ("ADRs"), including emerging market securities. The Fund may hold a portion of its assets in cash or cash equivalents.<br/><br/> In selecting securities, T. Rowe Price generally seeks to identify companies with a leading market position, seasoned management, and strong financial fundamentals. T. Rowe Price believes that solid company fundamentals (with an emphasis on strong growth in earnings per share or operating cash flow) combined with a positive industry outlook may potentially reward investors with strong investment performance. It is anticipated that some of the companies targeted will have good prospects for dividend growth.<br/><br/> In pursuing its investment objective, T. Rowe Price has the discretion to purchase some securities that do not meet its normal investment criteria, as described above, when it believes there is an opportunity for substantial appreciation (such as, for example, T. Rowe Price believes a security could increase in value as a result of a change in management, an extraordinary corporate event, a new product introduction or innovation, or a favorable competitive development). The Fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.0.1293<b>Principal Risks </b>The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money.<br/><br/><b>Cash Position Risk</b> The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.<br/><br/><b>Convertible Securities Risk</b> Convertible securities are subject to the risks of both debt securities and equity securities. The values of convertible securities tend to decline as interest rates rise and, due to the conversion feature, tend to vary with fluctuations in the market value of the underlying common or preferred stock.<br/><br/><b>Foreign Investment Risk; Emerging Markets Risk; Currency Risk </b> Foreign securities, including ADRs, are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of the Fund&#8217;s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social, instability, greater custody and operational risks, and greater volatility in currency exchange rates.<br/><br/><b>Growth Company Risk </b> The prices of growth securities are often more sensitive to market fluctuations because of their heavy dependence on future earnings expectations, and can be more volatile than the market in general.<br/><br/><b>Liquidity Risk</b> Certain securities may be difficult (or impossible) to sell or positions difficult to close out at a desirable time and price, and the Fund may be required to hold an investment that is declining in value or be prevented from realizing capital gains.<br/><br/><b>Management Risk</b> The Fund relies on the manager&#8217;s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.<br/><br/><b>Market Risk</b> The value of the Fund&#8217;s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.<br/><br/><b>Preferred Stock Risk</b> Preferred stocks are subject to the risks associated with other types of equity securities, as well as additional risks, such as potentially greater volatility and risks related to deferral, non-cumulative dividends, subordination, liquidity, limited voting rights, and special redemption rights.<br/><br/><b>Valuation Risk</b> The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.<b>Performance Information </b>515The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance (Russell 1000<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> Growth Index) and an additional index that provides a comparison for the Fund&#8217;s returns without regard to investment style. Performance for Class A and Class N shares of the Fund reflects any applicable sales charge. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More up- to-date performance information is available at http://www.massmutual.com/funds or by calling 1-888-309-3539.2031465672657<b><a name="pro458123_23a"></a>MM MSCI EAFE<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> International Index Fund </b><b>Annual Performance </b><br/><br/><b>Class S Shares </b>899<table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"><tr><td valign="bottom">Highest<br/>Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">1Q&nbsp;&nbsp;'12,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">18.59%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">Lowest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">4Q&nbsp;&nbsp;'08,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" nowrap="nowrap">&nbsp;</td> <td valign="bottom" nowrap="nowrap" align="right">-24.74%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table>1975<b>Average Annual Total Returns </b><br/>(for the periods ended December 31, 2012)86118166198245851After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor&#8217;s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class S only. After-tax returns for other classes will vary.Highest Quarter:0.12442009-09-300.0651For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds.0.2343Lowest Quarter:25000March 31, 20140.2Other Expenses are based on estimated amounts for the current fiscal year of the Fund.-0.24640.17790.17390.1210.17740.17530.10490.15880.1751<div style="display:none">~ http://www.massmutual.com/role/ScheduleShareholderFeesMassMutualSelectSmallCompanyGrowthFund column period compact * ~</div>
0.00050.00050.00050.0005For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds.-0.0088-0.0126-0.0083-0.0097-0.0108-0.0254-0.0170.005925000You have the potential to make money by investing in the Fund, but you can also lose money.<div style="display:none">~ http://www.massmutual.com/role/ScheduleAnnualFundOperatingExpensesMassMutualSelectSmallCompanyGrowthFund column period compact * ~</div>
0000.0025<div style="display:none">~ http://www.massmutual.com/role/ScheduleShareholderFeesMassMutualSelectFundamentalGrowthFund column period compact * ~</div>
0.320.0360.03090.03060.0350.03390.02340.02760.04990.00220.00260.00340.00340.00720.00720.00720.00720.03130.00990.01030.01110.0136<div style="display:none">~ http://www.massmutual.com/role/ScheduleExpenseExampleTransposedMassMutualSelectSmallCompanyGrowthFund column period compact * ~</div>
<div style="display:none">~ http://www.massmutual.com/role/ScheduleAnnualFundOperatingExpensesMassMutualSelectFundamentalGrowthFund column period compact * ~</div>
<table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"><tr><td valign="bottom">Highest<br/>Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2Q&nbsp;&nbsp;'09,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">15.92%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">Lowest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">4Q&nbsp;&nbsp;'08,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" nowrap="nowrap">&nbsp;</td> <td valign="bottom" nowrap="nowrap" align="right">-22.13%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table>-0.0008-0.0008-0.0008-0.000800002006-12-142006-12-142006-12-142006-12-142006-12-142006-12-142006-12-140.00910.00950.01030.0128Except for Class N shares, the figures shown above would be the same whether you sold your shares at the end of a period or kept them. For Class N shares, you would pay the following expenses if you did not redeem your shares:<div style="display:none">~ http://www.massmutual.com/role/ScheduleExpenseExampleTransposedMassMutualSelectFundamentalGrowthFund column period compact * ~</div>
For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds.<div style="display:none">~ http://www.massmutual.com/role/ScheduleExpenseExampleNoRedemptionTransposedMassMutualSelectSmallCompanyGrowthFund column period compact * ~</div>
<b>Average Annual Total Returns</b><br/>(for the periods ended December 31, 2012)25000You have the potential to make money by investing in the Fund, but you can also lose money.You have the potential to make money by investing in the Fund, but you can also lose money.The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance (Russell 1000<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> Growth Index) and an additional index that provides a comparison for the Fund&#8217;s returns without regard to investment style.<div style="display:none">~ http://www.massmutual.com/role/ScheduleExpenseExampleNoRedemptionTransposedMassMutualSelectFundamentalGrowthFund column period compact * ~</div>
You have the potential to make money by investing in the Fund, but you can also lose money.1-888-309-3539<div style="display:none">~ http://www.massmutual.com/role/ScheduleAnnualTotalReturnsMassMutualSelectSmallCompanyGrowthFundBarChart column period compact * ~</div>
The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1 and 5 years, and since inception, compare with those of a broad measure of market performance.0.0675http://www.massmutual.com/fundsPast performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.1-888-309-35390.0615<div style="display:none">~ http://www.massmutual.com/role/ScheduleAnnualTotalReturnsMassMutualSelectFundamentalGrowthFundBarChart column period compact * ~</div>
http://www.massmutual.com/fundsPast performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.-0.1567The Fund began operations July 25, 2012. Because the Fund is new, there is no table which shows how the Fund&#8217;s returns have deviated from the broad market. Performance history will be available for the Fund after it has been in operation for one calendar year.<div style="display:none">~ http://www.massmutual.com/role/ScheduleAverageAnnualTotalReturnsTransposedMassMutualSelectSmallCompanyGrowthFund column period compact * ~</div>
<div style="display:none">~ http://www.massmutual.com/role/ScheduleAverageAnnualTotalReturnsTransposedMassMutualSelectFundamentalGrowthFund column period compact * ~</div>
After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.0.2059After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.0.1055After-tax returns are shown for Class S only. After-tax returns for other classes will vary.The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years (or 1 year and since inception for Class Z shares) compare with those of a broad measure of market performance (Russell 2000 Growth Index) and an additional index that provides a comparison for the Fund&#8217;s returns without regard to investment style.0.0294<div style="display:none">~ http://www.massmutual.com/role/ScheduleShareholderFeesMMMSCIEAFEInternationalIndexFund column period compact * ~</div>
0.0873Highest Quarter:<b>INVESTMENT OBJECTIVE </b>This Fund seeks both capital growth and income.2012-03-31<b>FEES AND EXPENSES OF THE FUND </b>Performance for Class A and Class N shares of the Fund reflects any applicable sales charge.<div style="display:none">~ http://www.massmutual.com/role/ScheduleAnnualFundOperatingExpensesMMMSCIEAFEInternationalIndexFund column period compact * ~</div>
0.00850.00850.00850.00850.00850.00850.1859This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 129 of the Fund&#8217;s Prospectus or from your financial professional.Except for Class N shares, the figures shown above would be the same whether you sold your shares at the end of a period or kept them. For Class N shares, you would pay the following expenses if you did not redeem your shares:1-888-309-35390.2997Lowest Quarter:http://www.massmutual.com/funds0.09800000.00250.0050.00140.00180.00260.00262008-12-310.0757-0.24740.00880.00920.010.01250.2106<b>Shareholder Fees</b> (fees paid directly from your investment)0.00090.00280.00320.00470.00470.00520.085<b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment)-0.3398<b>Example </b>0.00030.00030.00030.00030.00030.0003This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund&#8217;s operating expenses are exactly as described in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:0.2417Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.0.13910.00970.01160.0120.01350.0160.0190.0592-0.02290.0043-0.0008-0.0008-0.0008-0.0008-0.0008-0.00080.16490.070.00890.01080.01120.01270.01520.0182<table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"><tr><td valign="bottom">Highest<br/>Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">3Q&nbsp;&nbsp;'10,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">8.99%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">Lowest<br/>Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">3Q&nbsp;&nbsp;'11,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" nowrap="nowrap">&nbsp;</td> <td valign="bottom" nowrap="nowrap" align="right">-11.11%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table>Except for Class N shares, the figures shown above would be the same whether you sold your shares at the end of a period or kept them. For Class N shares, you would pay the following expenses if you did not redeem your shares:<b>MassMutual Select Blue Chip Growth Fund </b><b>Portfolio Turnover </b>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 107% of the average value of its portfolio.<b>Annual Performance </b><br/><br/><b>Class S Shares </b>After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor&#8217;s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class S only. After-tax returns for other classes will vary.<div style="display:none">~ http://www.massmutual.com/role/ScheduleExpenseExampleNoRedemptionTransposedMassMutualSelectGrowthOpportunitiesFund column period compact * ~</div>
For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds.250000.00120.00270.00370.00520.00520.0057Highest Quarter:2003-06-300.1718Lowest Quarter:1.052008-12-31Other Expenses are based on estimated amounts for the current fiscal year of the Fund.-0.1940.0659For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds.0.2208-0.023925000-0.40730.201Because Total Annual Fund Operating Expenses include Acquired Fund fees and expenses, they may not correspond to the ratios of expenses to average daily net assets shown in the &#8220;Financial Highlights&#8221; tables in the Prospectus, which reflect the operating expenses of the Fund and do not include Acquired Fund fees and expenses.0.1256You have the potential to make money by investing in the Fund, but you can also lose money.0.01370.1779The Fund began operations July 26, 2012. Because the Fund is new, there is no table which shows how the Fund&#8217;s returns have deviated from the broad market. Performance history will be available for the Fund after it has been in operation for one calendar year.After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.After-tax returns are shown for Class S only. After-tax returns for other classes will vary.<b>Average Annual Total Returns </b><br/>(for the periods ended December 31, 2012)You have the potential to make money by investing in the Fund, but you can also lose money.The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance.1-888-309-35390.16750.17510.16490.15950.11360.16350.16160.09180.14550.1751http://www.massmutual.com/funds2004-10-152004-10-152004-10-152004-10-152004-10-152004-10-152004-10-15Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.0.01230.0090.00970.01190.0104-0.00410.00470.005993971056983073209743450.07920.07260.06880.07870.0770.06810.07120.0738539561604127012061252134521100.09810.1095Highest Quarter:2003-06-30After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.0.2989Lowest Quarter:2008-12-312010-11-152010-11-15-0.2757March 31, 2014After-tax returns are shown for Class S only. After-tax returns for other classes will vary.0.58Performance for Class A and Class N shares of the Fund reflects any applicable sales charge.For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds.00000.05750After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.25000After-tax returns are shown for Class S only. After-tax returns for other classes will vary.You have the potential to make money by investing in the Fund, but you can also lose money.000000.01The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1 and 5 years, and since inception, compare with those of a broad measure of market performance.<b>Principal Risks </b>0.30640.12340.06930.10740.0605-0.35890.32160.1524-0.03230.1488250000.10130.09760.06940.1010.09860.03270.16960.01650.10810.04670.04220.03880.0460.04530.02170.07730.02520.070900000.05750000000.01After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor&#8217;s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class S only. After-tax returns for other classes will vary.<div style="display:none">~ http://www.massmutual.com/role/ScheduleShareholderFeesMassMutualSelectSmallCapValueEquityFund column period compact * ~</div>
After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor&#8217;s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class S only. After-tax returns for other classes will vary.<div style="display:none">~ http://www.massmutual.com/role/ScheduleAnnualFundOperatingExpensesMassMutualSelectSmallCapValueEquityFund column period compact * ~</div>
0.010.010.010.010.010.01<div style="display:none">~ http://www.massmutual.com/role/ScheduleExpenseExampleTransposedMassMutualSelectSmallCapValueEquityFund column period compact * ~</div>
00000.00250.005<div style="display:none">~ http://www.massmutual.com/role/ScheduleExpenseExampleNoRedemptionTransposedMassMutualSelectSmallCapValueEquityFund column period compact * ~</div>
<div style="display:none">~ http://www.massmutual.com/role/ScheduleShareholderFeesMassMutualSelectFundamentalValueFund column period compact * ~</div>
0.0017<div style="display:none">~ http://www.massmutual.com/role/ScheduleAnnualTotalReturnsMassMutualSelectSmallCapValueEquityFundBarChart column period compact * ~</div>
<div style="display:none">~ http://www.massmutual.com/role/ScheduleAnnualFundOperatingExpensesMassMutualSelectFundamentalValueFund column period compact * ~</div>
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<table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"><tr><td valign="bottom">Highest<br/>Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2Q&nbsp;&nbsp;'09,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">17.97%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">Lowest Quarter:</td> <td valign="bottom">&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">4Q&nbsp;&nbsp;'08,</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" nowrap="nowrap">&nbsp;</td> <td valign="bottom" nowrap="nowrap" align="right">-21.15%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table>0.1003-0.0407<div style="display:none">~ http://www.massmutual.com/role/ScheduleExpenseExampleNoRedemptionTransposedMassMutualSelectFundamentalValueFund column period compact * ~</div>
0.1013<div style="display:none">~ http://www.massmutual.com/role/ScheduleAnnualTotalReturnsMassMutualSelectFundamentalValueFundBarChart column period compact * ~</div>
<div style="display:none">~ http://www.massmutual.com/role/ScheduleAverageAnnualTotalReturnsTransposedMassMutualSelectFundamentalValueFund column period compact * ~</div>
0.03For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds.25000<div style="display:none">~ http://www.massmutual.com/role/ScheduleShareholderFeesMassMutualSelectDiversifiedValueFund column period compact * ~</div>
<b>Average Annual Total Returns </b><br/>(for the periods ended December 31, 2012)<div style="display:none">~ http://www.massmutual.com/role/ScheduleAnnualFundOperatingExpensesMassMutualSelectDiversifiedValueFund column period compact * ~</div>
<div style="display:none">~ http://www.massmutual.com/role/ScheduleExpenseExampleTransposedMassMutualSelectDiversifiedValueFund column period compact * ~</div>
2009-12-012009-12-012009-12-012009-12-012009-12-012009-12-012009-12-012009-12-012009-12-01<div style="display:none">~ http://www.massmutual.com/role/ScheduleExpenseExampleNoRedemptionTransposedMassMutualSelectDiversifiedValueFund column period compact * ~</div>
0.21280.1642You have the potential to make money by investing in the Fund, but you can also lose money.0.11590.1087The bar chart shows changes in the Fund&#8217;s performance from year to year for Class S shares. The table shows how the Fund&#8217;s average annual returns for 1, 5, and 10 years (or 1 year and since inception for Class Z shares) compare with those of a broad measure of market performance.<div style="display:none">~ http://www.massmutual.com/role/ScheduleAnnualTotalReturnsMassMutualSelectDiversifiedValueFundBarChart column period compact * ~</div>
1-888-309-3539<div style="display:none">~ http://www.massmutual.com/role/ScheduleAverageAnnualTotalReturnsTransposedMassMutualSelectDiversifiedValueFund column period compact * ~</div>
http://www.massmutual.com/fundsPast performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.After-tax returns are shown for Class S only. After-tax returns for other classes will vary.0.21170.19430.1550.21030.20820.13620.19130.1642The Fund is a &#8220;fund of funds&#8221; and seeks to achieve its investment objective by investing in a combination of domestic and international mutual funds sponsored by MassMutual or its affiliates (&#8220;Underlying Funds&#8221;) using an asset allocation strategy. Underlying Funds can include MassMutual Select Funds, MassMutual Premier Funds (which are advised by MassMutual), and Oppenheimer Funds (which are advised by OFI Global Asset Management, Inc. (&#8220;OFI Global&#8221;), a majority owned, indirect subsidiary of MassMutual). The Underlying Funds may invest in various asset classes, including equity securities, fixed income securities, and money market instruments. Underlying Funds may also invest some or all of their assets directly or indirectly in one or more commodities or commodities-related investments or may themselves invest using an asset allocation strategy among equity, fixed income, money market, commodity, and other investments. The Fund has a moderate asset allocation strategy (relative to the other risk-based MassMutual RetireSMART Funds), with approximately 60% of its assets invested in equity and similar funds and approximately 40% invested in fixed income funds, including money market funds. In its periodic determination of the Fund&#8217;s asset allocation to Underlying Funds, MassMutual will attempt to select Underlying Funds that it expects will provide an aggregate exposure to &#8220;junk&#8221; or &#8220;high yield&#8221; bonds (securities rated below investment grade by Moody&#8217;s or Standard &amp; Poor&#8217;s, or unrated securities determined to be of comparable quality by the applicable adviser or subadviser), including securities in default, of not more than 10% of the Fund&#8217;s assets (although the Fund&#8217;s exposure may from time to time exceed that percentage). The Fund is designed for use as part of an overall investment strategy by an investor who is saving for, or is already in, retirement.<br/><br/>The table below shows the Fund&#8217;s approximate allocation, as of March 15, 2013, among various asset classes and Underlying Funds. The Fund&#8217;s investment adviser, MassMutual, intends to manage the Fund according to the Fund&#8217;s asset allocation strategy, and does not intend to trade actively among Underlying Funds or to attempt to capture short-term market opportunities as primary activities. MassMutual may modify the asset allocation strategy or the selection of Underlying Funds from time to time, and may invest in other Underlying Funds, including any Underlying Funds that may be created in the future. At any given time, the Fund&#8217;s asset allocation may be affected by a variety of factors (such as, for example, whether an Underlying Fund is accepting additional investments).<br/><br/> <div style="TEXT-ALIGN: center; WIDTH: 100%"><div style="width: 100%;"><div style="text-align: left;"><table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr bgcolor="#cceeff"> <td valign="top"><b>Equity Funds</b></td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom"><b>&nbsp;</b></td> <td valign="bottom" align="right"><b>58.8%</b></td> <td valign="bottom" nowrap="nowrap"><b>&nbsp;&nbsp;</b></td></tr> <tr> <td valign="top"><b>&#151;Domestic Equity Funds</b></td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Select Diversified Value (Brandywine Global/Loomis Sayles)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">1.8%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td valign="top"> Select Fundamental Value (Wellington Management) </td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2.1%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Select Large Cap Value (Columbia Management/Huber Capital Management)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">1.3%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td valign="top"> Premier Disciplined Value (Babson Capital)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">6.3%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Select Focused Value (Harris)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">3.0%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td valign="top"> Select Fundamental Growth (Wellington Management)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">1.8%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Select Blue Chip Growth (T. Rowe Price)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">1.8%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td valign="top"> Select Growth Opportunities (Sands Capital/Delaware Management)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">1.5%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Premier Disciplined Growth (Babson Capital)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">6.1%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td valign="top"> Select Mid-Cap Value (NFJ/Systematic)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2.8%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Select Small Cap Value Equity (Wellington Management/Barrow Hanley)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">1.6%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td valign="top"> Select Small Company Value (Federated Clover/T.&nbsp;Rowe Price/Earnest Partners)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">0.3%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr bgcolor="#cceeff"> <td valign="top"> MM S&amp;P<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> Mid Cap Index (NTI)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2.0%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table></div></div></div><div style="TEXT-ALIGN: center; WIDTH: 100%"><div style="width: 100%;"><div style="text-align: left;"><table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"><tr bgcolor="#cceeff"> <td valign="top"> MM Russell 2000<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> Small Cap Index (NTI)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">1.9%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td valign="top"> Select Mid Cap Growth Equity II (T.&nbsp;Rowe Price/Frontier)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">1.9%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Select Small Cap Growth Equity (Wellington Management/Waddell&nbsp;&amp; Reed/Timberline)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">1.0%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td valign="top"> Select Small Company Growth (The Boston Company/Eagle)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">0.8%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Oppenheimer Real Estate (OFI Global)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2.2%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td valign="top"><b>&#151;International/Global Equity Funds</b></td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Select Diversified International (J.P. Morgan)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2.2%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td valign="top"> MM MSCI EAFE<sup style="FONT-SIZE: 85%; VERTICAL-ALIGN: top">&#174;</sup> International Index (NTI)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">4.2%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Select Overseas (J.P. Morgan/MFS/Harris)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">5.4%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td valign="top"> Premier International Equity (OFI Institutional)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2.1%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Premier Focused International (Baring)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">0.9%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td valign="top"> Premier Strategic Emerging Markets (Baring)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2.4%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Oppenheimer Developing Markets Fund<br/>(OFI Global)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">1.4%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td height="8"></td> <td height="8" colspan="4"></td></tr> <tr> <td valign="top"><b>Fixed Income&nbsp;&amp; Short Term/Money Market Funds</b></td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom"><b>&nbsp;</b></td> <td valign="bottom" align="right"><b>38.6%</b></td> <td valign="bottom" nowrap="nowrap"><b>&nbsp;&nbsp;</b></td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Premier Money Market (Babson Capital)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">0.1%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td valign="top"> Premier Short-Duration Bond (Babson Capital)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">7.9%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Premier Inflation-Protected and Income (Babson Capital)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">4.1%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td valign="top"> Premier Core Bond (Babson Capital)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">15.4%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Select PIMCO Total Return (PIMCO)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">3.2%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td valign="top"> Select Strategic Bond (Western Asset)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2.8%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Premier High Yield (Babson Capital)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2.1%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td valign="top"> Premier International Bond (Baring)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2.8%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Oppenheimer International Bond Fund<br/>(OFI Global)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">0.2%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr> <tr> <td height="8"></td> <td height="8" colspan="4"></td></tr> <tr> <td valign="top"><b>Other Funds</b></td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom"><b>&nbsp;</b></td> <td valign="bottom" align="right"><b>2.9%</b></td> <td valign="bottom" nowrap="nowrap"><b>&nbsp;&nbsp;</b></td></tr> <tr bgcolor="#cceeff"> <td valign="top"> Oppenheimer Commodity Strategy Total Return (OFI Global)</td> <td valign="bottom">&nbsp;&nbsp;</td> <td valign="bottom">&nbsp;</td> <td valign="bottom" align="right">2.9%</td> <td valign="bottom" nowrap="nowrap">&nbsp;&nbsp;</td></tr></table></div></div></div> <br/>Note: the allocation percentages have been rounded to one decimal place. The allocation among equity, fixed income &amp; short term/money market, and certain other funds therefore does not equal 100%.<br/><br/>Through its investments in Underlying Funds, the Fund may be exposed to a wide range of securities and other instruments with differing characteristics (such as credit quality, duration, geography, industry, and market capitalization), including, but not limited to, equity securities of small-, mid-, or large-capitalization U.S. or non-U.S. issuers, fixed income securities of U.S. or non-U.S. private or governmental issuers (including &#8220;junk&#8221; or &#8220;high yield&#8221; bonds, including securities in default), inflation-protected securities, bank loans, and short-term investments of any kind. Equity securities may include common stocks, preferred stocks, securities convertible into common or preferred stock, real estate investment trusts (&#8220;REITs&#8221;), rights, and warrants. An Underlying Fund may engage in foreign currency exchange transactions, including forward contracts, options on currency, futur